On Comments and Blogger Changes

There's a message in our little blogger dashboard this morning that says that OpenID has been rolled out to everyone - so theoretically you should be able to choose a WordPress, AIM, TypePad and some other types of logins in order to comment. If you have one of those, could you let me know if it's working and if it's reasonable and useful. The mucking about with comments was one major tick in the "move to my own host" column.