Blogging?

I know that we’ve covered this topic a lot, but I was intrigued by this article from Scientific American about the therapeutic values of blogging.

I’m wondering about any of you who do blog for this aspect of blogging, does it work for you, are you able to recognize real benefits? And for those who blog commercially, do you think that if the blogosphere grows yet larger for therapeutic reasons that commercial bloggers will eventually become victims of overblogging?