Well we are not a blog, but a forum. But the concept is the same - communication with fellow humans. But there is talk that blogging or participating in forums could be good for your emotional and mental health. While I think it is all too easy to become addicted to your computer (I speak from personal experience!) ;-) I can see how it might provide a venue for communication for some individuals that may not have another which offers such convenience.
Read this - its very interesting.