You can now use your WordPress.com blog as an OpenID.
Are you fed up with having to remember dozens of usernames and password? Does the idea of creating yet another account on yet another site leave you cold?
OpenID is a new standard that hopes to alleviate some of the pain, and we’ve just made it available to everyone who has a WordPress.com blog. This means you can sign in to a growing number of sites using your existing WordPress.com account.