Facebook Evangelist
A person who yells in your ear about getting Facebook, even though they probably don't like you and definitely don't want you to be friends with their mom.
Hey, you don't have Facebook? You're missing out! I'm gonna tag you in 100 groups.
I'm gonna make you friend my uncle, and he's gonna friend my cousin, and then we're gonna all be friends.
If you don't get Facebook, I'm gonna post your photo on my wall with a caption that says 'This person is a loser.'