I check my groups almost daily, but in most cases. I find I was the last contributor. Either no one has anything to say, which I doubt, or the specialized groups aren't serving the purpose for which they were intended.
The groups have been dead since we moved to the new site.
The community part of the site has been on the downturn for a while. While one or two of the groups that were put together pre-new site still thrive, there seems to be no new conversation/groups surviving.
The new site has some really great features and is very updated...but forums are not what they use to be. Things change I guess and I stopped trying to make the new site do everything the old site did.
The sited had to be updated. I wish the community forum had evolved as well but that's life. You rarely get everything you want.