As Tim Harford just tweeted (I still hate that word...)
"Twitter is siphoning off all the stuff we used to put on blogs that really wanted to be a tweet." http://bit.ly/g4u3Cp @doctorow on newsOne the fascinating things about the medium is the way it has taken on a life of its own, being used pretty differently to how its creators intended.
So basically, you should really get yourself on twitter. You can always just dip your toe in and have a look around without actually signing up. You can also get my twitter RSS feed without signing up.