| Rank | Board name and description | Posts | Members |
| 1 | Mtbr Mountain Bikes reviews forum | 6221719 | 216332 |
| 2 | The Fashion Spot Fashion industry message boards | 5559533 | 60785 |
| 3 | GSM Forum GSM and mobile phone message boards | 4676734 | 1158387 |
| 4 | Lawn Site Garden and green industry forum | 3262228 | 94994 |
| 5 | PB Review Paintball message board | 3184307 | 213624 |
| 6 | AR15 Guns and rifles message board | 2792011 | 59163 |
| 7 | Airliners.net Aviation message boards | 2130320 | 12465 |
| 8 | Key Publishing Aviation message boards | 1281504 | 15881 |
| 9 | Aqua Computer Systeme Aqua Computer System support forum (in german) | 1263421 | 14230 |
| 10 | Reseller Ratings Computer hardware discussion board | 988551 | 277998 |
| 11 | Sukhoi.ru Aviation forum (in russian) | 701142 | 9647 |