Here is a very interesting statistic: Since the beginning of the year, Astromech.net has outpaced the Yahoo group in both new users and posts. Astromech.net has had 34% more users than the Yahoo group since January and had over 700 more posts in the new forums.
The wiki is ever expanding and there are over 7000 images in the gallery!
That is a huge reflection of all the great work that Wayne, Chris, and Greg do to keep the site running and continually making it better.
The R2 Builders Club is unique among the Star Wars fan community in that so many of its resources are found in one place. No where else can you find such a great repository for knowledge about such an intricate topic. If you aren't reading and participating at Astromech.net, you are missing more than you are seeing!