[arctux]

I think that this is a fairly common when it comes to technology. The terms and conditions seem reasonable ("we collect some data to provide more relevant ads"), but when you look a bit more closely they build a personal file that contains who you communicate (email/text/call) with and how often, where you go, what you buy, which websites you visit, which videos you watch, etc to the extent that they are able. My mother is very smart, well-educated (she has a PhD), and relatively tech savvy (she works in scientific computing), but she was still floored when I told her about some of the tracking Facebook and Google perform. Google recording her location (which she technically agreed to, but did not realize) was enough that she asked me to help her migrate away from Gmail. She probably would have managed without my assistance, but the barrier would have been much higher.