How about this one from Ars Why Google keeps your data forever, tracks you with ads http://arstechnica.com/tech-policy/news/2010/03/google-keeps-your-data-to-

How about this one from Ars Why Google keeps your data forever, tracks you with ads http://arstechnica.com/tech-policy/news/2010/03/google-keeps-your-data-to-learn-from-good-guys-fight-off-bad-guys.ars http://arstechnica.com/tech-policy/news/2010/03/google-keeps...