We have the problem a lot in my job (advertising design) where people send us a photo they got from the internet, thinking that because it's out on the web, they have free reign to use it. It's hard for us to tell customers that we can't use the art they sent, but for integrity's sake and to avoid potential lawsuits, we have to be really careful. One of my designers had her work stolen and accredited to the thief. She had to threaten a lawsuit and they backed off.
I hope you can get this straightened out GG! Chip, is there any way to prevent downloads from TeaChat, if this is where the images were stolen from?