I requested beta access to the Wibiya site to install their toolbar a day or two ago and received notification and installation rights today.
It took me less than 10 minutes to install the toolbar on my blog with connections to my Twitter page, my Facebook Fanpage and my weblog community. I've watched my dashboard for the application track the number of views and visitor use of the toolbar as folks visit the site and interact with the page.
It's a great tool and I highly recommend to you for your use and integration. The slide up notifications are a special bonus and there's no end to what you can do with such a simple and powerful application.