I think I had one of the CT loons on ignore once but they were getting quoted by people all the time so I saw their bilge anyway. I don't believe I have anyone on ignore although I do have a select few that i'll never engage with, for one reason or other.
I have always had a problem with the tone of posts rather than the content. I put London Irish on ignore for a long time and it was probably just my perception of the tone in the posts but I would get peed off seeing them anyway.
The Large One is another but he seems to have gone off the radar of late.