I'm sure some of you in college have heard of Facebook.com (formerly, thefacebook.com). It's a favorite pasttime of NTs, especially the most extroverted ones. For reasons unknown even to myself, I did create a profile on there. I have a total of maybe seven friends linked on there, and most of them are really acquaintances. Some people have over 100 friends listed. Most people have somewhere between 30 and 100.
By the way, facebook.com operates on a college-by-college basis. You can search for people who are in your classes. For example, if you like a girl but don't want to go through the bother of actually asking her if she already has a boyfriend, facebook.com is your friend! She might have indicated "In a relationship" on her profile. Beyond this and some other uses, most extroverted NTs use it to create mostly pointless "groups" that show some semblance of affiliation with an idea or often a silly catchphrase.
Does anyone else have a profile on facebook.com?