Google collects information about where you compute from, and provides location based services based upon where you travel. To protect this information, and to use it to protect people from spam and scrapers, Google might follow processes to protect that information and to analyze it.
Post a review from Germany about a restaurant, and then 15 minutes later from Hawaii about another restaurant, it’s spam. Drive down a highway where the cell towers collecting information about your journey are located in the middle of Lake Michigan, it’s likely spam. If GPS says you’re in NYC, and you then connect via Wifi in Wisconsin a few minutes later, spam. This information may not even come from you, but rather from others that might impersonate you.
Google was granted a patent last week which explores how they could use location based data to identify spammers and scrapers. It would also put user location information in a quarantine, and possibly hide starting and/or ending points for journeys from mobile devices to protect privacy for users, and to explore whether or not the information is spam. The location information could be used by the search engine, and that detailed information about locations to keep some information from being used in location based services, or other services that Google might offer.