| Rank | Board name and description | Alexa ranking | Posts | Members |
|---|
| 1 | Slashdot
Technology news commenting website | 229 | 13988544 | 880049 |
| 2 | Channel 4
UK based general discussion forums | 1719 | 852300 | 46853 |
| 3 | Pravda.ru
Russian general discussion forum (in english) | 2252 | 1440110 | 5411 |
| 4 | Sign on San Diego
Forum for a San Diego newspaper | 3128 | 3098423 | 11528 |
| 5 | Democratic Underground
American left-wing political forum | 6879 | 5725051 | 82408 |
| 6 | Club Planet
Clubbing in the US message boards | 12523 | 2210483 | 190240 |
| 7 | Meteo Red
Spanish Forum about meteorology | 19664 | 2768549 | 15807 |
| 8 | Able2know
General knowledge exchange forums | 24020 | 2815662 | 75470 |
| 9 | Night Club City
Nightlife and clubbing forums | 28336 | 1086704 | 6428 |
| 10 | Firehouse
Firefighting Discussion Board | 31656 | 992905 | 203168 |
| 11 | In the mix
Australian music and clubbing discussion forums | 32245 | 6582146 | 173506 |
| 12 | Unexplained Mysteries
Mysteries and conspiracy forums | 39121 | 3035022 | 76505 |
| 13 | Hip Forums
Hippies message boards | 39193 | 3536329 | 86457 |
| 14 | Politica Online
Politics forums (italian) | 57062 | 8284306 | 26712 |
| 15 | BNN
A forum of public broadcaster BNN | 59194 | 1373155 | 13358 |
| 16 | Timebomb 2000
World news and events discussion forums | 66817 | 4033962 | 4769 |
| 17 | Liberty Forum
General interest forum | 73053 | 1185300 | 3865 |
| 18 | Pakistani Defence Forum
A Pakistani community on defence and politics | 101372 | 942028 | 8115 |
| 19 | Wacken
Wacken heavy metal open air discussion forums | 103481 | 4296577 | 49806 |
| 20 | Revolutionary Left
Left wing political forum | 129327 | 1040371 | 7724 |
| 21 | Perspectives
Us politics and society forums | 134968 | 5166623 | 149405 |
| 22 | Buzzlife
Music discussion forum | 140947 | 2647781 | 34017 |
| 23 | WHQ Foren
General military discussions (in german) | 151006 | 801714 | 3323 |
| 24 | In Review
News discussion forum | 161259 | 652138 | 96747 |
| 25 | Eastern US Weather
East Coast Weather discussion board | 195039 | 3690077 | 10332 |
| 26 | World Affairs
Politics discussion board | 203358 | 722248 | 12082 |
| 27 | Politics Forum
Politics discussion board | 227883 | 1459305 | 7440 |
| 28 | Gurn.net
UK clubbing message boards | 248685 | 2662126 | 23322 |
| 29 | Afghanistan War
Global Discussion Forum | 279721 | 1464572 | 1916 |
| 30 | Politics.be
Belgian forum for political topics (in Dutch) | 405066 | 6010442 | 21903 |
| 31 | Discuss Anything
General discussion forum | 414235 | 2156559 | 13680 |
| 32 | Protest Warrior
Right wing political discussion forum | 505194 | 1735600 | 14474 |
| 33 | WebPiraat.nl
General discussion (in dutch) | 521451 | 10541282 | 22954 |
| 34 | Wired Fire
News and review community | 566543 | 493646 | 2429 |
| 35 | JLA Forums
General discussion forum | 623929 | 140843505 | 56488 |
| 36 | MNVibe
Electronic dance music discussion board | 633669 | 1207112 | 9812 |
| 37 | P45rant
General discussion forums | 652338 | 1205800 | 6255 |
| 38 | Mauisun
Anti narcotics discussion board | 811974 | 670837 | 35677 |
| 39 | Party East Carolina
East Carolina students message board | 828276 | 4232050 | 32448 |
| 40 | Whistle stopper
Political Discussions | 913329 | 1396943 | 23201 |
| 41 | US Politics Online
A US political discussion forum. | 932576 | 830092 | 3642 |
| 42 | Storm2k
Weather discussion forums | 1013431 | 1405630 | 11719 |
| 43 | Gatecrasher - discontinued
UK based clubbing discussion forum | 1729257 | 973921 | 8541 |
| 44 | No PC forums
Conservatives and Libertarians political forum | 2382060 | 754326 | 835 |
| 45 | Peoples Forum
General discussion and debates forum | 5144768 | 3240572 | 12711 |
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