I have recently come across two of my photos being used on the internet without my knowledge.
While I am open to the idea of my works being used for non-commercial purposes, I still don't like when my signature is removed from my artwork.
So if you have the need to borrow my photo or drawing for whatever reason, it would be nice if you asked for permission to use it without removing my signature, and showing me exactly how you used my artwork. If I didn't care about letting the world know I made something, I wouldn't sign my name on it. So, please, respect that.