Speaking of search suggestions, Google tests two features that could save a few clicks: displaying the top result for navigation queries, which usually have a single best answer, and showing ads related to the query at the bottom of the list of suggestions. I don't see the two features, but Sterling, a reader of this blog, spotted them while testing IE8.
Google also tests enabling search suggestions in Image Search:
In other news, Google Maps Germany added a questionable feature that shows suggestions when you start to enter a location, after being tested in Google Maps China. If you are logged in, the first suggestions are from your list of saved locations.
{ Thanks, Sterling and Luke. }