Twitter is a social messaging site that allows you to post updates and keep in touch with friends. You can follow what your friends are doing at that moment(provided they update often), and they can do likewise. You can also have twitter alert you to your friends updates via mobile text messages and...

This is an interesting question to ponder considering that there a ton of choices. I was reading about this post over at Problogger.net by Darren Rowse. He posted this question that he received from a friend on Twitter. If you could use only 3 social sites to work with, what would they be? These three...