I am posting images daily to some communities. With the months I’m loosing track of what was already posted by me and others.
So does someone know a service (preferably a website) where I can input a image or link and see in which communities and when it was posted?

Edit: Well, I should have clarified from the beginning my intention behind this question.
I was thinking about creating such a service. So I wanted to know if similar already exists (and so save me the effort of development). Also I wanted to sample from the comments if there is interest in such a tool.

Current result: there is no such service but reposts are not really to worry much about.