Find your stolen camera by searching web for uploaded pictures.
Stolencamerafinder.com helps you track down your stolen digital camera. Just drag and drop photos from your camera before it was stolen onto the box on the website. The site then scans scraped databases for the EXIF data embedded in the picture to locate other photos encoded with your same serial number. If there's a hit, that person might have your camera.
Every photo you take with your digital camera contains hidden information about both the image and the camera such as the make, model and date. This information, called exif data, can also include a unique serial number which identifies your camera.
Stolencamerafinder searches the internet, collecting the serial numbers of the cameras that took the pictures.
If the photos are attached to someone's profile, you can use that as the starting place to try to contact them. You can send a message through the same online service, or build a profile and use your sleuthing skills to track them down by other means.
Link: http://www.stolencamerafinder.com/