Dammit, I did not want to merit your post because you're a Legendary member, but it was spot-on and I had to.

I have an extensive ignore list to guide my ignoring habits, though that doesn't mean I don't peek at posts here and there.  The members I have on my list are ones who've proven to be habitual shitposters, and I have no reason to suspect that they're going to improve anytime soon.  I generally don't put members on ignore just because I disagree with them, even if that's a consistent thing--I don't have QS, TECSHARE, and a number of others on my list.  They generally don't write big rambling walls of shitposting text like cryptohunter and those others write, so I don't mind seeing their posts.

Theymos never put down any guidelines for merit sources and their ignore lists.  If he ever did, I would gladly abide by them.