There was a great writeup on WebProNews about a blogging service (Blogetery) housing 70,000 blogs was shut down today by an unnamed government agency. Apparently it was due to some user generated content on Blogetery's servers.
Seriously — if your blog is at the center of your business, don't trust it to a free (or ultra-cheap) hosting service… Get some decent hosting and use self-hosted WordPress — it will give you more control and peace of mind.