Last week, I was lucky enough to get an invite to test out a new "Social Search" application called Aardvark that was recently released into the wild. Well, not completely into the wild (more on that in a sec), but wild enough that a no-talent hack like me managed to get an invitation (thanks again, @marshallk and @davidadewumi).
So here's how it works:
You can tell Aardvark what times of day you're available to answer questions, and you always have the choice to Pass on one you can't answer.
A typical exchange might look something like this:

Asking questions is just as easy as answering them. You just IM a question to the aardvark.im contact and poof, Aardvark does the rest.
All in all, it's pretty damn cool, and extremely useful. I can't wait to see what happens once they get more users with a wider knowledge base onboard. Other than that, my only Wish List item would be Twitter support.
Now, getting back to that releasing-into-the-wild thing. Right now, Aardvark isn't open to the public, so there are only a couple ways to get in on the fun:
So, yeah. I have a few invitations still that I'd be happy to share. Just email email me (justin@nerdliness.com) or leave a comment here if you're interested and I'll get back to you with the details. I only ask that you a) actually use the service and b) name your next child after me.