2) An elite version of Friendster, a less teeny-bopper and cleaner version of Myspace
3) An actual book of students' pictures and contact information at many colleges. May or may not be limited to the incoming freshman class, depending on the college. Often found at top tier universities.
Girl: Last night I didn't get any work done because I was looking at facebook all night!
Girl 1: I found that really hot guy from our history class on facebook last night!
Girl 2: Really?!
Girl 1: Yeah! His name is insert name here, he's in insert classes here, he's single and is looking for a relationship, friendship, dating, random play, or anything he can get! (options under relationship status and what one is looking for)
Facebooker 2: wow. I really didn't need to know all that.