I consciously leave a lot of the Google data collecting features on. More than once, Google search suggestions have been freakishly good; this is coming out of

I consciously leave a lot of the Google data collecting features on. More than once, Google search suggestions have been freakishly good; this is coming out of my ass, but I feel like they might use your contacts for suggestions, which I usually notice studying last minute for a test or whatnot. Then, of course, you have things like Google Photos, the aforementioned Google Maps features, etc.