The main business model of these two firms is quickly becoming selling location data to hedge funds. This needs to be illegal.
After a couple weeks, I'm much more confident that my location data isn't leaking all over the place.
There's a system-wide setting to disable app access to BT and wifi location data.
I imagine the data from both of them, standalone is quickly becoming flawed/inaccurate. From Foursquare's perspective, less users means less data coming in, and you need a LOT of data for location insights to be meaningful.