Most Hated Online Habit/Activity?

Sorry for vague title.
I absolutely hate fake videos leading into RickRoll. It's a terribly annoying meme.
I also hate the usage of more than three exclamation marks in an exclamatory sentence. Three is the 'getting sort of stupid' point, and after that it's simply 'get off the internet, no one is that happy'.

Your hate of these habits or activities?


-HWL/KK

POOR GRAMMAR

I HATE people who steal sprites, animations and art.
I HATE THEM.