The history of the places you have physically been to

https://maps.google.com/locationhistory If you have forgotten where you had been, in terms of location, in the past few days, then Google can help you out. If you have your location turned on on your cell phone, then google can easily store your locations. Now, this can be beneficial for you; however this also means that Google (and other agencies) can know where you have been in the past. Link #3: The history of your preferences: https://www.google.com/ads/preferences/ This is the most important link that you can check out. Google can easily save your advert preferences so that it can give you accurate adverts next time around. Now, they save your taste and preferences even if you use maps, google search, mail or any other google product. Via this, google can easily understand what language you speak, where you live and what your hobbies are. Link #4: