Facebook Crusader
A Facebook Crusader is like a grammar Nazi with a Facebook obsession. They argue about everything and use Google and Wikipedia like a weapon. They will correct your spelling if they think they're losing.
You post, 'I luv pizza.' They reply, 'That’s not how you spell luv.'
They message you, 'You spelled 'congrats' wrong. I’m reporting you.'
They comment on your post, 'You said 'I like this' but you spelled 'like' wrong. You’re a failure.'