Basically, Worldcam is aggregating images posted in Instagram that are tagged with a location to feed users' searches. Users enter the general location and name of building they want to check out, and then images that have been tagged with the desired location appear, giving the user a rare glimpse of what's going on at that building.
The website also uses information from FourSquare, Geonames and Geoplugin.
While the premise of Worldcam is admittedly pretty cool, it could potentially also be very creepy.
First, Instagram users may not be aware that their images are being published elsewhere. Second, even though Worldcom only uses images from people who both tag their pictures with a location and who have a public profile, it doesn't necessarily mean people who do both of those things will want their Instagram images posted elsewhere.
While Worldcam uses Instagram's application program interface (API), or information for its own purposes, it is not endorsed or certified by Instagram, according to the Worldcom website.
If Instagram users want to keep their geotagged images off the the new website they need to change the privacy settings on their Instagram account.
Worldcam did not immediately respond for request for comment.