Location-based social networks were one of the top five trends of 2010. Nowadays, location is baked into pretty much everything that developers do. Mobile and social apps are location-enhanced, not location-based. You still can, however, "check in" somewhere using geosocial networks Foursquare, Gowalla and Facebook Places. Location-based services like Yelp utilizes the geographic position of your mobile device to figure out what's nearby.

Wondering who's actively using geosocial and location-based services? Take a look at this handy infographic after the jump.

Now it's strange to think that your phone might not know where you are at this very moment.

Infographic via FlowTown. Image via Flickr user qthrul.