I recently gave a second chance to a commenter who had behaved badly here and then set up a new persona and began commenting again. This person — who I was able to identify as the same person via his/her IP address — today posted multiple abusive comments, under new separate personas that were meant to look like they were coming from other, different people again. They were all from the same person. I have not only banned that person again, but have taken the additional extra step of deleting his/her comments that were posted under the supposedly reformed persona.
I don’t like doing this. I would prefer it if everyone behaved themselves. But I will not tolerate abuse toward me or toward my other commenters.
Another idiot recently posted something to the effective that because “this is the Internet,” s/he could post whatever the hell s/he wanted here. S/he was mistaken. “This” is not “the Internet.” This is my site. This is my party. And if you come into my party and start behaving like a thug, you will be kicked out.
Go start your own damn web site if you want to hurl abuse at people. Don’t even think about doing it here.