WikiYou’s aim is apparently to create a biography of everyone in the whole world. Judging from my initial exploration of the site, they have a long way to go. Since I generally prefer someone who knows something about me to write my bios, I copied and pasted the one from the about page here.
The biggest negative I see is that there appears to be no accountability. Anyone can write something about someone else, good or bad. I also find it odd that while you have the chance to post one custom link, they ask for your myspace page. While I certainly have one, I would think being able to link to the social network of your choice would be more logical. Mashable describes WikiYou as Twitter Plus Wikipedia but I can’t quite figure out why.