John Battelle has some interesting facts:
Average revenue per search (yes, any kind of search, not just paid): 12 cents. It was around a dime in late 04.
Avg. revenue per searcher: $7
Avg. revenue per sponsored click: 62 cents.
Estimated profits for Google in 06: Roughly $4 billion (Bear Stearns) (which is about the same as their forecasted annual revenues this year, FWIW)
Revenue growth of Google year to year: 96%
Of Yahoo: 42%
Estimated revenue growth for next year for Google (Bear): 61%
For the average of eBay, Yahoo, and Amazon: 29%
Price target for GOOG (Piper): $445
Number of shares Battelle owns (For all of you who keep asking): 0
Also: Number of employees added in the past year: Nearly 2000
Amount spent on capex, 05 (estimate): $800 million
Amount MSFT is estimated to spend: $810 million