The usual thing is to use a reverse image search engine such as Tineye
http://www.tineye.com/
Doesn't work for me either and I know for a fact that some of my images are being used on more that one site..........ho hum.....
Oggy said:This got me thinking and I tried Googling my photobucket account name and got a surprise.
2 of my pictures are being used illegaly. :nono:
They are both rubbish and I have no intentions of doing anything about it, but it proves the tactic works some of the time anyway.
TinyEye is awful!
If you found them that way then does that mean that they are linking to the image rather than a saved copy?
In that case just remove/re-upload them to photobucket and you'll break their links.