Tafiti is a search visualization application built with Silverlight 1.0 and the Windows Live APIs. The Tafiti code is hosted on CodePlex under the Microsoft Public License (MS-PL), as announced by Marc Mercuri last month.
Tafiti highlights some of the pain inherent in Silverlight 1.0 development, too. Most notably the pain felt from a total absence of any infrastructure needed to build these reusable controls. Tafiti provides this infrastructure for inself. For example, a generate UniqueNames method: