Now you can sync your blog (hosted on wordpress.com) with Twitter , Facebook and Yahoo updates.
And this service allows publishing posts on Facebook, Twitter and Yahoo personal updates, and Facebook is the latest to join the family after both Twitter and Yahoo updates, this service can be activated by going to Dashbord -> My Blogs and choosing to activate the service on one or all networks and it will be done Redirect to the registration page of your chosen site to login and allow synchronization between it and your blog.
For more information Publicize
