Do you get annoyed when someone puts their question in a completely irrelevant category?

The formats have changed so much recently that many of the old categories have gone away altogether. I give people a break because of that, and as long as I can read the question and it's not a "mature topic" question in the main area, I don't worry about it.

Nope. EP has changed categories so often since I've been here I have COMPLETE sympathy for people who just click whatever button they like.

No.. I rarely even notice what category they're under.