I've officially migrated my blog from .Net Developer's Journal (http://www.timstall.dotnetdevelopersjournal.com/) to my own domain - http://www.timstall.com/. .NDJ dropped their blogs, so it was inevidable.
It was an interesting technical adventure - I decided to use blogger based on some friend's recommendations, and was pleased with their API - it just worked:
I was able to set titles, publish dates, suggested Urls, and even dynamically add categories.
I could then write a simple app that posts 40+ entries a day (Blogger only allows a certain limit, so I couldn't do all 500 posts in an hour), so I made the migration tool run over several days.
[UPDATE] I added a page: http://www.timstall.com/p/timstalldotnetdevelopersjournalcom.html to help redirect traffic.