Just shipped Oomph: A Microformats Toolkit. Read about it here http://visitmix.com/lab/oomph and download it here: http://codeplex.com/oomph. And here's a video (not yet posted on Mix Online yet) that shows a demo:
With the whole project on Codeplex, you can see immediately all the source code and link directly to it. Here's a link to the Javascript file written in JQuery that occupied most of my time: http://www.codeplex.com/Oomph/SourceControl/FileView.aspx?itemId=225611&changeSetId=6555
We are actively seeking contributors to the project moving forward, so don't hesitate to sign up and join the project to keep working on Oomph.