Aardvark is providing a good service and it is a good tool. This is good knowledge based system.
If you have a question and there is nobody to help you, Aardvark will come for your rescue. Yes, you can be a free member and ask anything that you need answers.
There are so many services like this (e.g: forums) but this is so special because we can connect with Aardvark through IM(GTalk, MSN Messenger, iChat, AIM, Yahoo Messenger), Email, Twitter and get answers quickly as you can.
IM service is great and we can chat somebody else that we don't know get answers and help for resolving our problems.
So, try it out!!
Visit http://vark.com/;