It appears that Microsoft is planning a new project called Tulalip and could be positioning it as a hybrid search/social networking service.
Tulalip currently only offers a “welcome” message that explains itself this way:
With Tulalip you can Find what you need and Share what you know easier than ever.
There’s a non-functioning search box at the top of the page, preceded (mysteriously) by the word “OPEN.”
There are non-working links on the page that say “See how it works,” along with “terms of service” and “Privacy Statement” links. There are also Facebook and Twitter sign-in buttons. In fact, the Twitter sign-in/authorization page confirms further that Tulalip is an “experimental app” from Microsoft Research.