Windows Live Writer has been released to the public in beta form. This new program from Microsoft will let you blog directly to Spaces (or any other major blogging site). I find this nice for being able to post blogs very quickly, even if I'm offline.
Additionally, it makes formatting a bit easier. Click the link in the name above to download a copy. It still needs some work, for sure, but it's got most of the basics in place. Thankfully, it's also somewhat open-source. The SDK can be had from the same site for developing plug-ins and such. I'm anxious to see what kind of plug-ins will be developed.