| Rank | Board name and description | Posts | Members |
| 1 | RC groups Radio Controlled models discussion forums | 9628307 | 210231 |
| 2 | RCUniverse Radio controlled models community | 7526831 | 377132 |
| 3 | WebkinzInsider.com Webkinz toys and cards forum | 6112382 | 87814 |
| 4 | BZP Forums Bionicles related forums | 5142168 | 39675 |
| 5 | Spawn Spawn message board | 4165009 | 59605 |
| 6 | R/C Tech Forums RC racing message board | 3310638 | 46161 |
| 7 | Keenspot Comics discussion forums | 3160063 | 40946 |
| 8 | Traxxas Traxxas car models discussion boards | 3144012 | 45817 |
| 9 | Radio Control Zone Radio Control message boards | 1913339 | 74884 |
| 10 | Barone Rosso Models message board (in Italian) | 904447 | 15815 |
| 11 | AllSpark Transformers fans message boards | 616165 | 4060 |
| 12 | All Spark Transformers forums | 551731 | 5939 |