CNET has a comparative review of the TypePad and Blogger blog platforms. I think they made the right decision with their ratings.
‘We looked at the two top blogging services. Best known, and free, is Google Blogger. But you get what you pay for: Blogger is a basic blogging service that won’t overpower beginners with too many options or choices. For a small monthly fee, however, Six Apart TypePad provides the services we’d like to see offered within Blogger, such as mixed-media templates, built-in photo uploading, and guest accounts. Ironically, Blogger makes it much easier to host your blogs on your own domain; TypePad allows it but also requires a little extra work between you and your ISP.’