In the world of Hai:Thanks to @"AVacc" for pointing out a bug in rooms that made text disappear while you were typing a comment. I've fixed that (it was an issue with the code that shows new posts as they come in).
I've also added user search to the search page as a separate field. Type part of a user's visible name in the user search field to find him or her. You can also add any found users to Teams (or Wave or block those users) right from the search results.
In addition, each user's profile page now includes basic controls for adding that user to Teams, Waving, and blocking. Those controls appear at the top of the page.