You are mentioning very interesting points. I haven't thought of the fact that Google employees spend one day per week on their own projects. I don't know much

You are mentioning very interesting points. I haven't thought of the fact that Google employees spend one day per week on their own projects. I don't know much about the safeguards at Google to prevent single employees to evaluate such data in their own projects. If lots of people search for things like "how to trick google adwords" I think Google would be interested to find out where's these people are working.