I tried to log in to my account at liberal forum, only to see a message saying my account had been suspended until May 26, 2008. Since it already is past that date, I have no idea why I shouldn't be able to log in. I have no recollection of violating any rules there, and have received no explanation for the suspension.

Did you complain at all about how the place is being run? Did you suggest or hint in any way that you post on other forums? Those are usually the only real grounds the owner has for suspending or banning anyone.

I did make some remarks but I didn't think they were grounds for suspension.

Oh yeah, those were grounds for your suspension. The owner is a paranoid delusional jerk who can't stand anyone so much as suggesting that other web sites even exist.