I actually got banned from a forum just yesterday, as a matter of fact.
A few weeks or so ago, to try to understand the insane right-wing mind, I started lurking on the Hannity forums. Eventually, the sheer stupidity got to me, so I registered (I think it was a thread on evolution that got me). When I joined, I made it a point to obey the letter of the law on that forum, but to not hold back. I never started any threads- all I did was respond. Most of my posts were actually quite serious- I’d try to give factual answers as much as possible. I must admit that I did respond snarkily to particularly stupid examples of “Libruls are teh evil!!!11!!!”, though.
Anyway, fairly early on I got accused of being a “retread”- basically, what we call a “sock puppet” here. What surprised me is that this accusation is fairly common, and the accused are never accused of being a retread of anyone in particular. Another interesting thing is that there’s a subforum devoted specifically to reporting other members to the mods. So as a result of arguing with someone, that person reported me as a retread. One of the mods checked me out, though, and said I was okay.
So, yesterday, I got into another argument… and when I came back from a bike ride, I found that I’d been IP banned. I wasn’t too surprised. According to the rules, though, I was supposed to be able to argue my case in the mod forum- kind of hard to do if you’ve been banned. So I made another account, clearly labeled as a “responding to the ban” account (and quoted the rule which allowed me to do so), and asked politely, “If I’m a retread, who am I supposed to be a retread of?”
The mod who banned me replied with, “We’re not going to give you the satisfaction of seeing your name here, you know who you are.”- and banned my new account. Apparently, if they don’t like what you’re saying, they accuse you of being a retread to get rid of you.
TL;DR- I was banned from the Hannity forums for being a Liberal.