A lot of people seem really excited about the new Windows Live Custom Domains. I've seen some great individual posts on blogs about the service. Some folks left me some comments asking questions about the service. Well it turns out that the team has a blog that answers most of these questions.
There is one unfortunate thing about the service and that is the accounts are on classic hotmail (not Kahuna). We'll hopefully address that soon.
Oh, and I'd like to note. Some people have noticed, but this is hopefully one of many SBG (Shipped Before Google) features :-P.