[mseebach]

>> It showed how strong the GPS signal was at the time, how strong each surrounding Wi-Fi hotspot signal was, what local cell towers were nearby, and so on

That quote struck me as very strange. Why would they collect all that data in the first place, anyway, if not to do exactly this?

[mintplant]

Foursquare has measures in place to prevent people from gaming the check-in system--to keep people from faking check-ins and gaining badges and mayorships that they didn't earn. From what I've gathered, they collected this information originally to prove that someone was really at the location where they claimed to be.

[VLM]

"to keep people from faking check-ins and gaining badges and mayorships that they didn't earn."

And yet, people claim bitcoins are worthless.