From Wikipedia:
Aardvark is a social search service that connects users live with friends or friends-of-friends who are able to answer their questions. Users submit questions via email or instant messenger and Aardvark identifies and facilitates a live chat or email conversation with one or more topic experts in the asker's extended social network. Users can also review question and answer history and other settings on the Aardvark website.
Example of the service:
USER: i hate my job, i find it boring and the people i work with are unwelcoming. i am stuck in it for a few more months, how can i blow off heat? aardvark-g200@vark.com: Got it. I'm sending your question to someone who knows about *I Hate My Job*.
REPLY: (From **** B./31/M/Amsterdam,Netherlands, Re: **I Hate My Job**)
start drinking!
