I see microblogging as a way of following the thoughts of someone you’re already interested in. Maybe a friend, maybe a famous person. But it’s not a way to get deeper understanding. Nothing profound has ever been conveyed in a tweet. So I don’t know why I would look for the tweets of strangers. It’s more of a event tracking or relationship-maintaining kind of communication tool.
I’ve been using Grayjay and it seems to be a good front end for YouTube.