I think you are the first lurker to reveal themselves - congratulations.

There is only a whitelist, you can add users to it and remove users from it. There is no blacklist.

I don't want to show posts from all users. We must keep the whitelists in place because they set up all sorts of strange properties. For example, this site requires no maintenance on my part.

However, there are probably other features that will promote meeting people. These may be implemented in the future.

I hear you on the comment count filter - good idea.

Please, let it all out. The more feedback the better.