Ever heard of Twitter??

Twitter is an micro-blogging online app it describes itself this way:

"Twitter is a service for friends, family, and co–workers to communicate and stay connected through the exchange of quick, frequent answers to one simple question: What are you doing?"

I've only just started using this but its highly addictive each "tweet" is like 140 or less words long which you tell your followers what you doing and were you are, you can even sent "tweets" using your mobile. so check it out here.