to Meet" section, which on most MySpace profiles is filled with images of celebrities. Users can also list their favorite music, movies, and television shows, as well as their personal heroes; MySpace users can also blog on their pages. A user "friends" people -- that is, invites them by e-mail to appear on the user's "Friend Space," where they are listed, linked, and ranked. Below the Friends space is a Comments section where friends can post notes. MySpace allows users to personalize their pages by uploading images and music and videos; indeed, one of the defining features of most MySpace pages is the ubiquity of visual and audio clutter. With silly, hyper flashing graphics in neon colors and clip-art style images of kittens and cartoons, MySpace pages often resemble an overdecorated high school yearbook. By contrast, Facebook limits what its users can do to their profiles. Besides general personal information, Facebook users have a "Wall" where people can leave them brief notes, as well as a Messages feature that functions like an in-house Facebook e-mail account. You list your friends on Facebook as well, but in general, unlike MySpace friends, which are often complete strangers (or spammers) Facebook friends tend to be part of one's offline social circle. (This might change, however, now that Facebook has opened its site to anyone rather than restricting it to college and high school students.) Facebook (and MySpace) allow users to form groups based on mutual interests. Facebook users can also send "pokes" to