Why you should go for self-hosted blog, instead of free-hosted blog
There are two crucial issues that free-hosted blogs lack: value and brandability. For instance, myhotblog.blogspot.com is not brandable and valuable enough compared to myhotblog.com. Sure, you can purchase myhotblog.com and point the domain name to Wordpress.com or Blogger.com, but the idea behind a self-hosted blog is the ability to max-out blog customisation