Facebook Crusader
A Facebook Crusader is someone who thinks Facebook is their life. They argue with everyone, use Google and Wikipedia to back up their points, and will correct your spelling if you look at them wrong.
You post, 'This is the best day ever.' They say, 'That’s not how you spell 'ever.' You’re a failure.'
They message you, 'I’m going to report you for spelling mistakes. That’s not even a real word.'
You say, 'I think that’s cool.' They say, 'Cool? That’s not a real word. You’re not cool.'