searching for these two programs...

I recall sometime ago, a user showed off his application thingy that would trace an image back to its original source.... anyone here happened to know of such programs?

Also, I'm looking for a program that would trace and delete duplicate picture files. Any recommendations?

>>1
1: Need more data
2: DupDetector (Google)

>>2
The first one is a flame, you're stupid.
The second one is useless, you lose.