| Rank | Board name and description | Posts | Members |
| 1 | RC groups Radio Controlled models discussion forums | 13474038 | 289262 |
| 2 | RCUniverse Radio controlled models community | 9184373 | 407524 |
| 3 | WebkinzInsider.com Webkinz toys and cards forum | 7499397 | 98743 |
| 4 | BZP Forums Bionicles related forums | 5590442 | 44027 |
| 5 | Traxxas Traxxas car models discussion boards | 3980395 | 56322 |
| 6 | R/C Tech Forums RC racing message board | 3310638 | 46161 |
| 7 | Spawn Spawn message board | 3253461 | 22214 |
| 8 | Keenspot Comics discussion forums | 3160063 | 40946 |
| 9 | Radio Control Zone Radio Control message boards | 1994743 | 81749 |
| 10 | Barone Rosso Models message board (in Italian) | 1677977 | 25020 |
| 11 | Modelbouwforum Radio controlled toys forum | 1335857 | 16782 |
| 12 | All Spark Transformers forums | 656983 | 7062 |
| 13 | AllSpark Transformers fans message boards | 616165 | 4060 |