Google can now automatically erase web and activity data after a designated period of time. You can choose to allow Google to store this data for a period of three or 18 months. Visit Business Insider's homepage for more stories. As part of its broader effort to make privacy settings more transparent, Google recently announced a new feature that makes it possible to set limits for how long the company can save the data it collects about your activity. Under the new settings, you can choose to