Setting up a new posterous blog and adding a custom domain name, under my control, only took about 20 minutes. The majority of the time was spent trying to figure out if I could have a domain name that starts with digits. Turns out you can. Defining and assigning the custom domain was a piece of cake.
Bonus, Not that I’m a big Facebook poster, but posterous seems to have fixed their Facebook autoposting. Now I can hit Facebook and Twitter with one swell foop.