My personal blog is on blogger... on traveling as a single mom, or just on travel: It drives some traffic to my hubs so I consider it a plus. My writing on my blog is more informal than the writing on my hub... after all, it's a blog! ;)
Check out my blog at: http://travelqueenreports.blogspot.com/
I'm starting wordpress but as brunamiranda says, it's not as user-friendly. I had my own domain sometime back but it wasn't worth the money to keep it up.