I routinely use sites such as TinEye or Google Image Search to see where my photos are being used by copyright violators. This inevitably enrages me and I end up having to spend entirely too much time filing DMCA takedown notices. Recently, I searched for my April 11, 2011 photo (below) to see if had been stolen.
And it had.
Specifically, it was being used in a presumably-home made video for a song called "Maula" from an Indian movie with the somewhat questionable title Jism 2.
You can see the offense for yourself (at the 1:45 mark):
Or, if you prefer, here are some screencaps (notice how they murdered the photo with a crappy, garishly-colored overlay:
So now I get to waste even more precious time filing yet another DMCA takedown notice.