Yes, I use the software WordPress. It's also combined with a vBulliten forum so when you set up your own blog you might be missing that. However you can link to a SMF For Free forum if you wanted to.
I would personally suggest using
www.ezblogworld.com because SMF For Free owns it actually. It uses WordPress too. You can also use
www.wordpress.com. They too provide hosting like SMF For Free does for WordPress.
I don't actually know who hosts my site. The other admin deals with most of the coding and hosting, not me. I just help out with the basic stuff and managing members/writers. The host costs money though may I mention. I'm sure if you google around for some paid hosts you can find one if you want more than what exblogworld/wordpress can give you.