Twitter - nonsense or useful?

Is twitter useful or just another useless new web 2.0 site?

I started two tests on twitter with quite stupid topics. Even so that they doesn't contain any useful informations or interesting stuff, it got some followers:

Well, the name should say everyting ;-) When a beer is needed or might be a good idea, it is updated.

This microblog is generated by a cronjob with a simple php script. The script contains over 400 sentences divided in three groups. With them over 200 millon stupid manager bullshit phrases are generated every 13 minutes.

Even trying hard to find something usefull, in my opinion, Twitter is crap. It seems to me, I could just watch tv commercials - but actually I'm skipping them...