Now that would have been a func conceptAlso you cannot ignore yourself.

I find myself putting people on ignore whenever their posts tick me off on a regular basis, making me want to respond in kind.
Sometimes, their posts even contain interesting insights, but they're written in a way that prevents me from concentrating on the content, so it's a wasted effort.
It's extremely rare for me to remove someone from the ignore list, and when I do, it's usually years after putting them there.
The main reason why it's rare is that they've often either been banned in the meantime or moved on to pester other forums that were more accomodating of them.
I generally believe, that if you cannot keep it civil, don't post.