You switched from Google to Yahoo for privacy reasons? Yahoo! has already demonstrated their total lack of ethics regarding privacy by helping the Chinese jail thought criminals. Whereas, Google has designed all its systems and its business models to ensure that it does not need to cooperate with horrible regimes.

Also, Yahoo! happily shared its users' information with the U.S. government upon request (when not even legally obligated to do so), whereas Google went to court to fight for its users' privacy.