1. → Ed Gl 03:18, 4 February 2007 (UTC) reply
2. Count me in. Pascal.Tesson 08:05, 4 February 2007 (UTC) reply
3. Stardust8212 01:24, 5 February 2007 (UTC) reply
4. Vsion 02:07, 5 February 2007 (UTC) reply
5. -- Rajith Mohan ^{(Talk to me..)} 11:14, 6 February 2007 (UTC) reply
6. Magichands 01:22, 8 February 2007 (UTC) reply
7. Yewlongbow 19:55, 11 February 2007 (UTC) reply
8. -- Quywompka 10:34, 12 February 2007 (UTC) reply
9. - Ozzykhan 20:24, 12 February 2007 (UTC) reply
10. Addere 13:22, 13 February 2007 (UTC) Might as well fess up to my current obsession. reply
11. Jimj wpg 16:30, 13 February 2007 (UTC) reply
12. Joe Decker 17:54, 14 February 2007 (UTC) reply
13. Flubeca 17:29, 19 February 2007 (UTC) Another one of my helping Wikipedia tasks. reply
14. Crystallina - Not sure why I didn't see this. Crystallina 00:02, 23 February 2007
15. Gimboid13 05:57, 24 February 2007 (UTC) reply
16. Carlosguitar 19:43, 24 February 2007 (UTC) reply
17. Postcard Cathy 14:13, 25 February 2007 (UTC) reply
18. Shnupbups 15:30, 31 March 2010(UTC)
19. Pigslookfunny 23:10, 25 February 2007 (UTC) reply
20. Julius Sahara 19:05, 26 February 2007 (UTC) reply
21. Guthrie 00:53, 27 February 2007 (UTC) reply
22. Woohookitty 10:16, 28 February 2007 (UTC) My favorite project on here. reply
23. cbeaudoin 17:06, 1 March 2007 (UTC) Nothing better to do at work reply
24. Ebyabe 20:47, 2 March 2007 (UTC) If I'd known, I'd've joined ages ago reply
25. Flowerpotman 21:35, 2 March 2007 (UTC) (What Ebyabe said) reply
26. Strangerer 05:51, 6 March 2007 (UTC) reply
27. Scarykitty 21:42, 9 March 2007 (UTC) reply
28. Kevinsam 05:54, 11 March 2007 (UTC) reply
29. Keesiewonder ^talk 03:12, 14 March 2007 (UTC) reply
30. Sbpat21 22:47, 15 March 2007 (UTC) reply
31. Bass fishing physicist 18:57, 18 March 2007 (UTC) Organisation is important. reply
32. Minnaert 21:03, 20 March 2007 (UTC) just trying to do my part reply
33. John Carter 19:34, 21 March 2007 (UTC) reply
34. Lankiveil 03:06, 22 March 2007 (UTC) reply
35. Weggie 18:05, 29 March 2007 (UTC) reply
36. Mysdaao 19:06, 2 April 2007 (UTC) reply
37. Jeodesic 00:46, 3 April 2007 (UTC) As long as there are no stubs to sort... reply
38. FateClub 15:57, 4 April 2007 (UTC) reply
39. Dbm11085 05:56, 8 April 2007 (UTC) reply
40. Kurrurrin 20:11, 9 April 2007 (UTC) reply
41. Kernel Saunters 12:44, 10 April 2007 (UTC) reply
42. Pinball22 16:17, 10 April 2007 (UTC) I've been working on this for a little while, guess I should join. :) reply
43. Peachey88 09:56, 15 April 2007 (UTC) - I will do some when i am board and at the computer reply
44. Bwpach 12:42, 18 April 2007 (UTC) reply
45. Lwarf 10:30, 21 April 2007 (UTC) reply
46. GowsiPowsi 10:34, 21 April 2007 (UTC) reply
47. t@nn 14:37, 21 April 2007 (UTC) reply
48. Utopienne 01:53, 22 April 2007 (UTC) reply
49. Fishal 19:07, 25 April 2007 (UTC)
50. Rtucker 23:52, 25 April 2007 (UTC) My first official project, woohoo! reply
51. NawlinWiki - lucky no. 50, where's my door prize?
52. ϻʀχᴏѿ 23:25, 26 April 2007 (UTC)
53. Imaginationac
54. themaee
55. Belovedfreak 14:31, 1 May 2007 (UTC) reply
56. Nekohakase 17:05, 4 May 2007 (UTC)]] reply
57. bearian Bearian 23:09, 9 May 2007 (UTC) reply
58. Neranei 13:27, 12 May 2007 (UTC)-I'll help when I have time! reply
59. Jayron32| talk| contribs 18:13, 12 May 2007 (UTC) -- Been involved in the past, will check in once in a while to help out when I can. reply
60. Shindo9Hikaru 01:17, 22 May 2007 (UTC) reply
61. Smooth O 17:17, 28 May 2007 (UTC) reply
62. T Van Wormer 02:31, 30 May 2007 (UTC) reply
63. Mbisanz 23:27, 31 May 2007 (UTC) reply
64. Katharineamy 19:17, 1 June 2007 (UTC) I like tidying things up.  :) reply
65. DarkNiGHTs 00:33, 6 June 2007 (UTC) Cleaning time! reply
66. Magioladitis 07:43, 11 June 2007 (UTC) I am already in the Dead-end pages project and i already add categories. reply
67. PaladinWhite 15:06, 11 June 2007 (UTC) reply
68. Carla Hufstedler 15:53, 12 June 2007 (UTC) reply
69. catalexis of AZ 18:54, 13 June 2007 (UTC) reply
70. I thought I was already here.-- Wizardman 17:16, 17 June 2007 (UTC) reply
71. Gary King 01:22, 18 June 2007 (UTC) reply
72. thanks for this effort. -- Sm8900 14:45, 20 June 2007 (UTC) reply
73. Psych less 00:46, 21 June 2007 (UTC) reply
74. Bernstein2291 03:05, 24 June 2007 (UTC) reply
75. Lenticel ^{( talk)} 07:01, 29 June 2007 (UTC) After many uncat fixes, I think I earned the place to be here now. reply
76. Dbiel 09:14, 3 July 2007 (UTC) reply
77. Been doing it awhile, but count me in.-- Hourick 16:30, 4 July 2007 (UTC) reply
78. Likewise Joedoedoe 07:30, 5 July 2007 (UTC) reply
79. honds 01:23, 11 July 2007 (UTC) reply
80. Espresso Addict 15:39, 11 July 2007 (UTC) reply
81. DutchTreat 11:51, 16 July 2007 (UTC) reply
82. Cander0000 22:41, 22 July 2007 (UTC) reply
83. M1cr0s3rf06 11:09, 26 July 2007 (UTC) reply
84. Leo Laursen ( T | C ) 09:13, 28 July 2007 (UTC) reply
85. Bart133 ^{(t) (c)} 16:34, 28 July 2007 (UTC) reply
86. -- Uthbrian ( talk) 02:35, 29 July 2007 (UTC) reply
87. Eliz81 ^{(talk) (contribs)} 15:50, 31 July 2007 (UTC) I'm plowing through! :) reply
88. kateshortforbob 15:51, 2 August 2007 (UTC) reply
89. • nancy • 19:59, 5 August 2007 (UTC) After doing so much uncat tagging it is time I gave a bit back... reply
90. Bea Herbert 12:41, 14 August 2007 (UTC) reply
91. Kemosabe 10:41, 15 August 2007 (UTC) time I gave a bit back... reply
92. elmindreda 08:19, 18 August 2007 (UTC) reply
93. Rigadoun (talk) 19:28, 29 August 2007 (UTC) I do this periodically, may as well put my name here. reply
94. paulytlws
95. Deflagro ^C/ _T 00:37, 14 September 2007 (UTC) reply
96. Auric 21:19, 16 September 2007 (UTC) I should have done this ages ago. reply
97. sickmate 04:41, 21 September 2007 (UTC) reply
98. Demonwhip, 24 September 2007
99. DanTD 12:56, 6 October 2007 (UTC) I've been doing it enough without being a member, I might as well join this group for a while. reply
100. Sterry2607 I've been working on this project for a week - and have now decided this is the edit project for me
101. Oh Snap 02:31, 8 October 2007 (UTC). Go team. reply
102. thisisace 20:17, 8 October 2007 (UTC) reply
103. -- Legis ( talk - contribs) 12:24, 12 October 2007 (UTC) reply
104. Kathleen.wright5 04:11, 13 October 2007 (UTC) reply
105. Bsherr 20:51, 29 October 2007 (UTC) reply
106. F1_gUrL 20:51, 1 November 2007 (UTC)- I think i will enjoy doing this :) reply
107. -- Vistro 19:26, 2 November 2007 (UTC) reply
108. TheCoolestDude 17:38, 10 November 2007 (UTC) reply
109. Windjade 04:43, 16 November 2007 (UTC) reply
110. Amaryllis25 ^{"Talk to me"} 14:55, 16 November 2007 (UTC) reply
111. Res05e ( talk) 03:37, 27 November 2007 (UTC) reply
112. Acs4b ^{T C U} 04:41, 30 November 2007 (UTC). Categorisation is essential for Wikipedia's articles. reply
113. Chetblong ^{talk to me} 06:13, 3 December 2007 (UTC) reply
114. Latulla ( talk) 23:00, 21 December 2007 (UTC) Been doing this for awhile should probably put my name here. reply
115. Ouro ( blah blah) 11:48, 31 December 2007 (UTC) count me in reply
116. Phyesalis ( talk) 01:51, 1 January 2008 (UTC) reply
117. Cerebellum ( talk) 21:02, 1 January 2008 (UTC) I've already signed up for this on my previous account, but I should probably add my name for this account as well. reply
118. Pinkadelica ( talk) 09:59, 17 January 2008 (UTC) reply
119. - Milk's Favorite Cookie 22:41, 27 January 2008 (UTC) reply
120. LeaveSleaves ( talk) 09:37, 30 January 2008 (UTC) reply
121. Leaptad ( talk) 19:58, 30 January 2008 (UTC) reply
122. JamieS93 ( talk) 22:07, 30 January 2008 (UTC) Count me in on the task force: I love doing categorization work! reply
123. Tiptoety ^talk 05:47, 31 January 2008 (UTC) reply
124. Jonneroo ( talk) 09:34, 2 February 2008 (UTC) Sure; why not? 8-) I did one, and I learned a lot about a very interesting man whose name I had never heard. I'm figuring out that reading Wikipedia is educational, but contributing to Wikipedia is even more so. reply
125. Samquinn ( talk) 11:19, 7 February 2008 (UTC) reply
126. superstarwarsfan Superstarwarsfan ( talk) 20:21, 10 February 2008 (UTC) reply
127. Rosiestep ( talk) 21:49, 19 February 2008 (UTC) reply
128. Emachinest3256 ( talk) 21:38, 22 February 2008 (UTC) reply
129. Rorkadian( talk) 19:48, 24 February 2008 (UTC) reply
130. 69.140.152.55 ( talk) 04:05, 26 February 2008 (UTC) reply
131. Lando5 ( _sign/ ^talk) 01:20, 4 March 2008 (UTC) reply
132. Ketsuekigata ( talk) 22:26, 8 March 2008 (UTC) reply
133. Metropolitan90 (talk) 08:03, 22 March 2008 (UTC) reply
134. Hut 8.5 21:39, 25 March 2008 (UTC) reply
135. Victao lopes ( talk) 19:28, 6 April 2008 (UTC) - I recently discovered how fun categorizing pages can be. reply
136. Stepheng3 ( talk) 20:55, 19 April 2008 (UTC) I'm also interested in uncategorized categories. reply
137. Basketball123456 ( talk) 00:23, 24 April 2008 (UTC) reply
138. Isolde98 ( talk) 16:47, 30 April 2008 (UTC) reply
139. Christopher140691 ( talk) 19:18, 4 May 2008 (UTC) reply
140. ராமகுமரன் ramkumar 06:27, 7 May 2008 (UTC)
141. Mdebets ( talk) 11:25, 8 May 2008 (UTC) reply
142. CultureDrone ( talk) 10:51, 22 May 2008 (UTC) I've done it for a while so I guess I should sign up officially :-) reply
143. THE FOUNDERS INTENT ^TALK 18:50, 10 June 2008 (UTC) reply
144. Bradenkeith ( talk) 20:29, 12 June 2008 (UTC) reply
145. -- Shahab ( talk) 17:36, 21 June 2008 (UTC) reply
146. -- Alan Liefting ( talk) - 21:44, 23 June 2008 (UTC) reply
147. RayAYang ( talk) 08:47, 16 August 2008 (UTC) -- been doing this for a while now. reply
148. ShellyT123 ( talk) 16:12, 19 August 2008 (UTC) Categorizing articles is my new hobby! reply
149. -- Vince ( talk) 14:03, 21 August 2008 (UTC) declaring myself as a categorizer reply
150. -- Sultec ( talk) 16:38, 28 August 2008 (UTC) Sounds like a good thing to get my feet wet with. reply
151. -- ErikTheBikeMan ( talk) 14:34, 28 September 2008 (UTC) Like I need more to do, but I'll help. reply
152. Raven1977 ( talk) 17:35, 2 October 2008 (UTC) reply
153. EmanWilm ( talk) 19:46, 14 October 2008 (UTC) I'm in. reply
154. Horselover Frost ( talk) 03:52, 20 October 2008 (UTC) reply
155. I'm in. -- Haakonsson ( talk) 00:46, 3 December 2008 (UTC) reply
156. musicalmeg20 ( talk) 01:44, 3 December 2008 (UTC) Didn't realize there was a task force for this. I'm in. reply
157. ^H_iⁿ_t^s_s ^talk 00:43, 10 December 2008 (UTC) love categories reply
158. tgok ( talk) 04:35, 3 January 2009 (UTC) I could always go for some more categorization reply
159. Mianhammad59 ( talk) 14:47, 18 January 2009 (UTC) I will go for categorization reply
160. Omarcheeseboro ( talk) 03:25, 26 January 2009 (UTC) Cat cat cat reply
161. Mgm| ^(talk) 01:36, 8 February 2009 (UTC) reply
162. User:MrRadioGuy ^{What's that?/ What I Do/ Feed My Box} 04:09, 12 February 2009 (UTC) categorizing is fun and easy! :-p reply
163. Mjquin_id ( talk) 04:49, 10 March 2009 (UTC) - Been doing this from the beginning; somehow missed the concerted effort. reply
164. Skullers ( talk) 14:51, 3 April 2009 (UTC) back reply
165. The Earwig ^{( User | Talk | Contributions)} 01:47, 18 April 2009 (UTC) reply
166. Thanks, my name inc 19:36, 26 April 2009 (UTC) reply
167. Greedyhalibut ( talk) 04:28, 27 April 2009 (UTC) reply
168. Unionhawk ^Talk 20:22, 12 May 2009 (UTC) reply
169. I dream of horses ( talk) 14:08, 22 May 2009 (UTC) reply
170. Fingers ^OnRoids 16:39, 30 May 2009 (UTC) reply
171. Oashi ( talk) 23:13, 17 June 2009 (UTC) Declaring myself as a categorizer. reply
172. Sweetness46 ( talk) 14:45, 25 June 2009 (UTC) reply
173. Casablanca2000in ( talk) 10:38, 30 June 2009 (UTC) reply
174. Per Ardua ( talk) 01:11, 30 July 2009 (UTC) Serial categorizer reply
175. hjweth ( talk) 22:26, 5 August 2009 (UTC) reply
176. Bejinhan Talk 04:14, 28 August 2009 (UTC) reply
177. Declan Clam ( talk) 01:13, 23 September 2009 (UTC) reply
178. Thaejas ( talk) 08:28, 4 October 2009 (UTC) reply
179. User:LittlebutBIG Thomas LbB 18:28, 5 October 2009 (UTC) 'Count me in!!!' reply
180. ScoutBird ( talk) 09:24, 24 November 2009 (UTC) reply
181. Difu Wu Difu Wu ( talk) 18:00, 1 December 2009 (UTC) reply
182. Dustin 3choes 09:57, 9 December 2009 (UTC) reply
183. Venustas 12 ( talk) 05:52, 16 December 2009 (UTC) reply
184. Alvin Seville ( talk) 15:32, 1 January 2010 (UTC) Might as well join up, since I've been doing this for quite some time now. ;) reply
185. LunarHawk 01 ( talk) 11:05, 5 January 2010 (UTC) reply
186. Gosox( 55)( 55) 18:33, 21 February 2010 (UTC) Will help when I can. reply
187. vgmddg ( look |  talk |  do) 23:18, 10 June 2010 (UTC) reply
188. Bobby122 ( talk) 15:45, 27 June 2010 (UTC) reply
189. Ϣere SpielChequers 18:28, 14 August 2010 (UTC) reply
190. -- THE FOUNDERS INTENT ^PRAISE _{GOOD WORKS} 23:02, 18 August 2010 (UTC) reply
191. ~ Qwerp Qwertus Talk ツ 04:34, 31 August 2010 (UTC) reply
192. -- D•g ^{Talk to me}/ _{What I've done} 20:21, 1 October 2010 (UTC) I'm slowly helping you guys clear out the August backlog. reply
193. Usb10 ^Connected? 23:53, 10 October 2010 (UTC) reply
194. -- Sayantan m ( talk) 08:01, 22 November 2010 (UTC) reply
195. Zman03 ( User talk:Zman03) 27 November 2010
196. dheer( User talk:sudhir_h) 27 November 2010
197. TiMike ( talk) 03:18, 8 January 2011 (UTC) reply
198. Missvain Missvain ( talk) 04:26, 25 January 2011 (UTC) reply
199. Nthep ( talk) 20:02, 27 January 2011 (UTC) reply
200. Aelfthrytha ( talk) 18:08, 13 February 2011 (UTC) reply
201. mezza ( talk) 12:40, 19 March 2011 (UTC)- here to help! reply
202. TheRealSlimHumpy ( Narcissistic ROFLcopter) The Real Slim Humpy 10 October 2011
203. User:Ceyockey ( talk to me) 03:13, 3 January 2012 (UTC) reply
204. User:Abhishekitmbm 10 February 2012
205. Brightgalrs (/braɪtˈɡæl.ərˌɛs/) ^[1] 00:21, 12 April 2012 (UTC) reply
206. Greenmaven ( talk) 03:56, 19 April 2012 (UTC) reply
207. MatthewVanitas ( talk) 14:38, 22 September 2012 (UTC) reply
208. FoCuSandLeArN ( talk) 11:44, 2 November 2012 (UTC) reply
209. Saltwolf ( talk) 2:12, 3 November 2012 (UTC)
210. User:Bhaskarachandra ( talk) Ready for whatever task that may help Wikipedia!!! 8:09, 5 February 2013
211. RainCity471 ^{report my errors} _{list of failures} 12:25, 8 September 2013 (UTC) Categories help people find articles. Without them, articles will just disappear into Wiki-holes! reply
212. œ ^™ 10:20, 27 November 2013 (UTC) reply
213. LukasMatt ( talk) 08:07, 11 May 2014 (UTC) reply
214. MrLinkinPark333 ( talk) 05:08, 12 May 2014 (UTC) reply
215. Jllm06 ( talk) 13:05, 03 June 2014 (UTC) reply
216. Nikilada ( talk) 17:56, 6 November 2014 (UTC) reply
217. Backreach ( talk) 15:32, 28 December 2014 (UTC) reply
218. Iamthecheese44 ( talk) Iamthecheese44 ( talk) 06:23, 23 January 2015 (UTC) I didn't realize there was an official list of participants :3 reply
219. User:Juliussasar Juliussasar ( talk) 20:07, 28 January 2015 (UTC) reply
220. Funandtrvl ( talk · contribs) 17:35, 6 April 2015 (UTC) reply
221. Slivicon ( talk · contribs) 20:28, Thursday, June 18, 2015 ( UTC)
222. Chelb ( talk) 23:25, 1 August 2015 (UTC) reply
223. Stranger195 ( talk • contribs • guest book) 07:57, 27 September 2015 (UTC) reply
224. Ciridae ( talk) 09:30, 28 October 2015 (UTC) reply
225. Wishds ( talk) 06:32, 31 December 2015 (UTC) reply
226. Robevans123 ( talk) 20:22, 4 January 2016 (UTC) - specialities - railways, local history, Wales, backlog clearing reply
227. Zeke, the Mad Horrorist ^{(Speak quickly)} _{(Follow my trail)} 19:55, 31 January 2016 (UTC) reply
228. KConWiki ( talk) 02:43, 20 March 2016 (UTC) reply
229. User:The Diegonator 20:03, 18 June 2016 (UTC) reply
230. Prinsipe Ybarro ( Talk to me | Contributions) 11:30, 14 May 2017 (UTC) reply
231. User:Ring Master
232. User:Bbarmadillo -- Bbarmadillo ( talk) 21:27, 12 January 2018 (UTC) reply
233. Berek ( talk) 22:15, 30 June 2018 (UTC) reply
234. Polariz36 ( talk) 17:17, 20 August 2018 (UTC) reply
235. Blorper234 ( talk) 22:53, 1 October 2018 (UTC) reply
236. Jeezy-043 ( talk) 15:40, 22 December 2018 (UTC) reply
237. Clintoncimring ( talk) 13:24, 02 February 2019 (UTC) reply
238. Kyuko ( talk) 00:27, 28 March 2019 (UTC) reply
239. stephszh ( talk) 10:51 00:51, 29 August 2019 (UTC) reply
240. Serprinss ( talk) 01:11, 17 December 2019 (UTC) reply
241. TuorEladar ( talk) 14:18, 22 April 2020 (UTC) Might as well say it, I love categorizing articles!! reply
242. Danidamiobi ( talk) 18:03, 12 May 2020 (UTC) Wikitty, Wikitty, goes the hot cat up along the wiki way. reply
243. Kingdom(Hearts)Come ( talk) 00:05, 12 July 2020 (UTC) Good way to contribute. reply
244. SHISHIR DUA ( talk) 23:05, 27 August 2020 (UTC) Pretty decent way to contribute. reply
245. EDG 543 ( talk) 01:02, 30 September 2020 (UTC) Just here to help out! reply
246. Kravk ( talk) 03:20, 26 January 2021 (UTC) reply
247. SVcode ( talk) 15:29, 22 February 2021 (UTC) reply
248. Niftysquirrel ( talk) 18:38, 29 July 2021 (UTC) reply
249. Guess this is what I'm good at doing, so why not join?. Dunutubble ( talk) 19:41, 29 July 2021 (UTC) reply
250. ^^^ -- DemonStalker ( talk) 17:22, 3 August 2021 (UTC) reply
251. seems fun enough Isabelle0934 ( talk) 22:01, 21 August 2021 (UTC
252. AirshipJungleman29~~ AirshipJungleman29 ( talk) 22:47, 9 May 2022 (UTC) reply
253. Hellosami ( talk) 07:37, 9 September 2022 (UTC) reply
254. User:2006toyotacorrola
255. Happy to help! HelplessBystander ( talk) 14:55, 23 January 2023 (UTC) reply
256. GiovanniSidwell ( talk) 15:01, 14 April 2023 (UTC) reply
257. Turtlecrown ( talk) 20:12, 17 September 2023 (UTC) reply
258. Nableaux ( talk) 20:02, 07 October 2023 (UTC) reply
259. I've been doing this for awhile.-- FeralOink ( talk) 10:52, 30 January 2024 (UTC) reply
260. Safari Scribe ^{Edits! Talk!} 02:25, 12 April 2024 (UTC) reply

For data, see " Contributor analysis for Category adders as of Jan 2012.ods". The image below summarizes the data included in this spreadsheet:

Methodology

For each signatory to this page, the sign-year+month was collected. Further, for each signatory to this page, the 'contributions' page was accessed and last contribution year+month was collected. Two criteria sets were used to assess the data: first, whether the signatory had contributed in the past year and second whether contribution had taken place in the past quarter (3 months). The image above summarizes two data sets; the cumulative number of signatories and the cumulative number of those signatories who have contributed to Wikipedia in any way in the past quarter. The Spreadsheet contains information on those users who have not contributed to Wikipedia in the past year as well. This data can be used to refine the signatories list to provide a better view on the potential resource available to this WikiProject. The actual resource would depend upon the editing trends of the signatories, data which is not readily available given reasonable effort directed to user-accessible data.

Post script

This analysis was done manually, but it could in principle be automated and subsequently applied to any WikiProject and it's self-nominated participant set. The choice of "contributions in the last quarter" was based on the current backlog of uncategorized pages and might not be suitable for every WikiProject. Likely, a "contributions in the past year" criterion might be more relevant for content WikiProjects vs. maintenance ones.