After reading Nik Peachey's ecstatic review of the Wibiya toolbar on his On Blogging and Social Media blog, I was moved to install it on The English Blog. Read Nik's post to find out what the Wibiya widget can do.
Like Nik, I'm impressed. Unlike Nik, however, I don't think I'll get rid of the widgets in the sidebar—yet. I've got a feeling that users will take time to get used to the new toolbar (which you should be able to find at the bottom of this page).