Aardvark: ask it anything, get an answer in 5 minutes [invites]

If you want an invite to Aardvark, click here.

San-Francisco startup Mechanical Zoo is trying to build the ultimate interactive knowledge base. And it's kind of addicting. Once you get started, you will not want to stop.

To use Aardvark, simply ask it a question. You can interact with it in so many ways too: web, IM, email, you name it. You can even ask questions via Twitter.

I just asked it a question:

Less than a minute later, I got an answer from someone in Melbourne, saying "tomorrow". Not always 100% accurate, but then again, my question wasn't really the best. Another minute later, I got a ping from Aardvark with a link to a CNET article about earthquakes.

Everyone's an expert at something, right? Here are my specialties so far:

When you start interacting with Aardvark, it passes the ball right back to you. Moments later I got this:

It went pretty well from there:

I like Aardvark because it's intuitive, and it doesn't interfere with your day. Sometimes it will IM you during the day, but you can just ignore it, or type "pass".