What people need to realize is that they're in control of SHARING their damn information. If you don't want to be tracked/followed/raped/murdered/stalked, then DONT ****ING TWEET/FACEBOOK/UPDATE ****
Yea I really couldn't care less.
Yes they will sell your information... It's why they make the app, it's their business model. BUT... they setll it in an aggregated form. There really is no use for anyone with access to their database to want to know where you are. If you believe there is, then you've got a massively inflated idea of where you fit into this world.
What they will sell is: Males between 20-25 rather go to this store instead of that store, so change your marketing strategy.
It's time people realise that no one with access to this information cares about you... I know, you're crushed, but it is the truth.