A quick note from the trenches: Google is going to monetize the hell out of its preforming properties. This allows them to build Wave and still have the stock price that they are so accustomed to maintaining. Take a look at this:

Google is brilliant: this ad placement is beautiful. It actually is a pre-search that brings me what I (probably) want before I even have to search for it. The time savings is measurable, Google pads the bank account, and the advertiser gets an even more premier place to push their products.