I have recently been using Aardvark, a service recently acquired by Google, to ask questions about things of interests such as computer and martial arts stuff. The service works by forwarding your questions to experts selected using some AI algorithm. The company that runs Aardvark does employ PhDs in artificial intelligence to build and enhance the service.
Aardvark is promoted as a social search engine. You can post and receive messages via a number of ways including instant messaging or mobile phones. There’s also a way of linking your Aardvark account to your Twitter and Facebook accounts.
So far, I’ve been receiving pretty good information about the things I asked. I encourage you all to try the service. Google seems to have plans to integrate this to their products as part of their initiative to enhance their prowess in social networking stuff. Right now, Aardvark is part of Google Labs and is still active.