As suggested by MOTM, some people do start threads that will only go one way for no reason. I'm another person that gets wound up by the continual amount of constant repeat questions, the most popular seem to be about whites, blacks and blueys. OK, allowing a question to be posted once and once alone is out of the question and would be over-moderating to say the least, but when there are several open threads on one page it's taking the pee a touch; use the search facility, that's what it's there for.
Spelling; don't get me started on this one. OK, I'm a little anal with spelling and punctuation, and I understand that not everybody is either as bothered, or as literate, but use Firefox and you get a lovely little spell checker with it (currently telling me Firefox is not recognised! :doh

. It's not hard to scan through and show a little effort and you're far more likely to get help if you do.
Having made both these points, I generally just skip these threads as I can't be bothered to say anything (and it does hurt to ignore some of the woeful spelling and grammar on here - see, told you I was anal). There have been a few threads recently I've commented on and upset people. If people are posting things on a public forum that could be controversial then they have to expect answers they like, and answers they don't like. Getting in a huff and ranting when they get something they don't like is, frankly, childish.