This is fantastic. Here is mine - http://hackerbuddy.com/users/2875

In fact, I'm adding it to my own laundry list of links on my blog and elsewhere. Really, great job and idea, and you implemented it well.

I love the very easy use of HTML editing on profiles, and I've already reserved my vanity url id (Dylan). Speaking which, it'd be fantastic if you could make the user profile url's /username (as others have commented). It would be more easily identifiable than a set of numbers, especially if you're building a network of hackers.

I also suggest adding even more social features. Not on par with a social network, but maybe forms for the typical information you'll find on a professional profile.

You did the back-end as well as the design, or it was a split effort with a hackerbuddy :p?