Blogger.com is the most flexible free blogging service in the blogsphere. Problem is that everybody uses it and it's gotten slow as hell. Searching for alternatives, I came across MyBlogSite.com. I created a blog in about one minute and was I impressed; customizable down to the HTML level (I can host Adsense) and support for BloggerApi, MetaWeblogApi, USM and much more. Recommended.
Confirmed, myblogsite.com seems to have adopted some Blogger.com behaviors.
Randy