There are a group of posters who I always read, and a group I ignore. I don't get annoyed about the ones I ignore, because its the internet and I expect window lickers and people I disagree with. Calling the mods down on them is just childish...
In terms of the group you ignore, do you mean you've actually hit the ignore button on them all?
Even when people on here are being complete twats, I still can't hit the ignore button. It surely would make some threads difficult to understand if they were an active part of it? Also, somebody might just go through a twatish phase and then be okay. If you ignored them, you wouldn't know if that happened?