Post Toast Toolbar
The goal is to:
1. Give your readers useful buttons. As a reader, buttons associated with each post are very slightly more useful than bookmarklets or browser tool bar buttons. A button next to a post will already have the permalink URL. They are also in the context of page - right as you reach the end of the post. I'm stretching a bit to justify them here, but we could add all kinds of stuff to the toolbar to make it useful - like email to a friend, or scrape images into flickr. The reader would choose once which ones they wanted to see.
Now, I have noticed most top bloggers do not have these buttons on their sites. However, the buttons are fairly prevalent amongst less established bloggers (perhaps out of desperation and cluelessness). This is a tiny but highly valuable bit of realestate to stake out.
Update:

