OK Twitter rocks!
It like loads of people talking at once - ITS A CONVERSATION!!!
I get it now - just follow a few people and they will talk to you. I got a message from someone saying that they listened to my Podcast as part of the ongoing conversation. Very interesting - you can only write up to 140 characters so clear and to the point communication is essential. You can get really good information straight back as well by putting a question out to your followers.
It appears to be what myspace was a few years back (ie good).
Also you can feed stuff you've found online out quickly - ie random bizarre stuff like this:
THE LAPTOP GUITAR!!!