What's the spin here? Google is trying to project:

    - Search is a hard, interesting problem - and we have really smart
      people working on it (come work with us).
    - Search is a competitive business (don't regulate us).
    - We use a scientific process (don't investigate our practices
      as a potential conflict of interest).

The video is interesting. But one thing NOT addressed is how much is the search experience improving? Yes, they've made "500 changes" to the algorithm last year. By what measure is search quality going up (or down)?

I sense an improvement over the last 6 months (seeing less low quality or spam links) - but I'd like to see this quantified.