'Do no wrong' faulty from the start !! (Score 1)

Here is what I don't get. One of Google's hippocratic values, 'Do no harm', was ignored at the start. They were capturing information on users searches and for what!? OK, I can understand that this info is helpful for the adsearch which is what pays the bills, but the adsearch program would only find this data useful for a limited amount of time. There is no need to keep and hold that data ad infinitum. Why not purge that data as it is old?