I find myself using Twitter more and more these days since on Dave Snowden's advise I installed TweetDeck as my primary user interface.
TweetDeck just runs in background and every so often I pop it up so see what my friends are up to. It also allows me to follow a large number of people and not be overwhelmed. I have two groups: my core network of about a dozen people and then several hundred others.
So if you like to tweet - take a look. And if you are not doing so already follow me on Twitter.