Foursquare To Start Selling Your Data
hasoffers.com
hasoffers.com
Take the "soccer moms" example. Foursquare can say "we have X soccer moms checking in." A third party says "Here's an ad we'd like you to serve to soccer moms." Foursquare does it and returns usage data -- how many soccer moms clicked, etc.
Not saying that's how they'd do it, just saying that it's possible, feasible, even easy to provide ad retargeting without any data visibility at all. It's a little early to cry foul, imo.
As for the user, if people don't realize by now that they are the product, by receiving a service for free, then they probably deserve to be taken advantage of.
There's no such thing as a free lunch if you check-in ;-)
It is strange this article makes it seem like some dirty little secret that companies like 4sq need to make money.
Either the product costs money, or you are the product.
There's no evidence that that's happening.
I think you're reading what you want into this.
Maybe the old fashioned yellow pages paper phone book is an even better example. All I know for certain is everyone in zip code abcde just got a copy of the ad. That doesn't mean they have a list of everyone in zipcode abcde.