Transformers Robots in Disguise
- For fans of the classic 80's TV show.
- http://groups.yahoo.com/group/transformersrobotsindisguise/

Transformers Trading Post
- Provide a place for Transformers fans to discuss, trade, sell, and buy toys and related collectibes.
- http://groups.yahoo.com/group/transformerstradingpost/

The Cybertronian Conference
- Greg Gaub's Transformers mailing list and discussion group.
- http://groups.yahoo.com/group/cybcon/

Georgia Transformers Alliance
- Hub for Transformers fans and collectors, located in Central Georgia.
- http://groups.yahoo.com/group/georgiatransformersalliance/

Georgia Transfans
- Club/discussion group for all Transformers fans living in Georgia.
- http://groups.yahoo.com/group/georgiatransfans/

Optimus Prime's Transformer Club
- A place to complete your transformers collection.
- http://groups.yahoo.com/group/optimusprimestransformerclub/

Cybertron Central
- Transformers fans for the Old & New Generation.
- http://groups.yahoo.com/group/cybertroncentral/