Hot topic of the day: Brian Solis is asking whether or not PR firms should blog about their clients. Whatever. Brian Solis thinks all PR people are profoundly stupid... or at least totally ignorant about anything that is not printed on paper. But that's fine. Brian Solis is a yacker.
Here's my advice. If you have something useful to talk about, then blog away. If you don't, then just keep your hands in your pockets. If you are not sure whether you have something interesting to say, call your dad or mom and ask them.
Just because you have the ability to blog doesn't mean you ought to blog.