Why are so many of my images getting removed?

I use tinypic when i post pictures in most of my lists because it's easier, and i have never had any problem before doing that, but recently they have been deleted because they are duplicates of other images. Images that are not only posted on that actor/movies page, but also images that are just posted on other peoples list. That is getting very annoying. I can't go through every list and page of the actors/movies i put on my lists just to see if the image i'm about to add has been used somewhere before. That's impossible. That is not a good system.

I think there was a mistake, I will restore them.

Okay. Thanks.