It has now been a little over seven months since I added the forums to this site and they have proved to be far more popular than I expected. At the time of writing the forums have over 200 registered users and 1500 posts.
They certainly help me to cope with the amount of questions I get related to my extensions. Although it makes me realize that I really need to devote some time to improving their documentation — something I plan on doing after the 1.0 release of the Web Developer extension.