Yahoo Answers has always been a great service for finding (and imparting) knowledge, but I am under the impression that its days might be counted. And I also believe that I am not the only person who feels like that.
After all, when one thinks of the connectivity that the Social Web has brought along it is not that much of a stretch to think that it is only a matter of time before services that operate in real time end up taking absolute priority.
This site couples the main social services of our age (Twitter and Facebook) and it lets you ask your friends and followers as many questions as you want. Besides, you can label these questions that you ask as private. That will come in handy for dealing with topics like relationship advice and so on.
And it must also be pointed out that you can have your questions asked to users of the site on the whole, so that your chances of finding a way out of any conundrum are increased exponentially.
20questions.com In Their Own Words
“20 Questions helps you find answers to your questions by sharing them with your friends on Facebook and Twitter, on your blog, or in our knowledgable communities. You can even ask questions privately to a specific group of friends.”
Why 20questions.com It Might Be A Killer
It makes finding the answer to any question something easy and also good fun.
Some Questions About 20questions.com
How many people are already using this site? 
