Most likely intended as a biography for AIM users, it has become much more.. Probably far greater (or less, depending on your perspective than the shifty-eyed AOL programmers ever intended it to be.
Teenage AIM users now use profiles to express love for their significant others, quote their favorite hit from TRL, quote conversations which they find immensely humorous, make shout-outs to their friends, advertise their web sites and generally cause a ruckus in their suburban American high school... Profiles lead to profile wars, which are really just silly little flame wars of the 21st century.
It's probably best to KISS when writing a profile, if you bother with one at all.