Are you job hunting, do you have an industry or personal profile to protect, are you involved with some level of controversy?  You need to think about doing your own blog. 

In his blog, Seth Godin talks about what a good idea this would be,  Seth Godin: The first thing to do this year. 

Usually if you put up a blog, with your name in the domain, you can rank well for your own name in the major search engines like Google and Yahoo.

You might as well put your best foot forward and present your side of the story.