Actually I think the creators of it, in case they didn´t get asked.

Imagine you spent some work into an image for a while. You finally have it done and it´s really awesome. Now people from an iServer are comming, just copying your file and making some profit of it without even giving you credits for it and without that the creator of it isn´t even playing the iServers for some reason (dislikes FB version whatever) so they have no use of it.
You might say "I´d be proud that they took something I actually made" but what is it good for if even credits aren´t given?


^Just in case when the creators didn´t get asked if it might get used.