Is it just me or have we had more members being Grammar national socialists recently? I've seen a lot of people correcting pretty much every grammatical mistake.
Another thing I see is people immediately assuming those who don't type well are idiots, which annoys me, since it's usually readable when they're flaming the person for the mistakes. Another thing along these lines that annoys me is when someone says something like "your stupid", and some random person says "irony!" just because of them using the wrong your/you're.