You've implemented a Wibiya bar on wpmu.org and it's awesome.
I would love to know how you've managed to wrangle that beast into such good shape! I'm not a Wibiya customer, but I would be if there was a preset/option they offered which was close to your own. From what I've seen their default presets are not nearly as nice as your current version.
I suspect that you've done some custom work there to make it so awesome. And the integration of related posts from the blog is magic...
I wonder if you are able to pass on your secrets on that one?! Or do you already offer some Wibiya mastery plugin/guide?