Tafiti is a new showcase of how we can now mix a rich web experience with search functionality.
You can view search results in a number of ways: tree view, newspaper view or drop-down results on a glass pane. You can also switch between search mediums and save search results.
Betanews discusses the news and explains that the name means "to search" in Swahili.
Take a look at this new concept on search and a great example of Silverlight's capabilities.