It's sometimes easy to forget, what with all of Google's various ventures and services, that the search giant's impressive revenue stream comes almost entirely from advertising revenue. To that end, Google has an extremely strong interest in keeping tabs on what users are up to online so that they can serve up targeted ads and keep that money train rolling.
Google's zeal in keeping up with user browsing habits backfired when a February 2012 report in the Wall Street Journal detailed how Google was skirting around a private web browsing setting in Safari.
The report explained how Google was using specialized code that worked to keep track of a user's web activity even when privacy setting
