I tell you what, if I didn’t firmly believe in the sanctity of controlling the domain where you post to I would scrap my plan to use Movable Type and just use TypePad. Let’s talk about the comment feature, which is basically the same as MT’s (but different than other blog tools).
You can enable comments on a per post basis, which is nice control to have. Maybe you don’t usually want comments. But then you post something where you do want comments. Having the ability to control commenting on a per post basis is nice to have.
Other blog tools like Radio have minimal comment features. With MT/TP you can opt to be notified of comments by email. You can also edit comments, not that you would do that to change the substance, but sometimes people have typos and they can’t edit them. With TP you can do it for them.
And not that you would do this either, but you can delete comments or even ban someone from further posting of comments. Granted the ban is by IP address so a minimally tech-savvy person would be undeterred but there is that option.
There are a lot of nice features to TypePad, and the commenting features are just one example.