A few hours ago, beta invites were received by a variety of Microsoft Connect members, other registered Microsoft users, and even by quite a few users that simply have a .net log-on address.
The Hohm beta website, which is open to ALL, is now live and can be found here.
You'll need a .net logon (IE: @live, @msn, @hotmail, etc.) to access the site.
A critical examination (with links to other articles as well) was posted this morning by my colleague Peter Troast at Energy Circle here.