At least most of my images were not watermarked. They can sell them on their behalf.
Yeah well.. my comics are not watermarked either.. Luckily I didn't really find any cunt doing that with my work.. apart svscomics and some other cunts that are using some "pay to download" hosts and pretty sure they get their parts too.
On the other side my friend
X3rr4 found her comics converted to ren'py and sold it on various gaming sites, even were uploaded to f95 for some time, was an well-known cunt that takes comics, converts it in a ren'py then sell it as his game.
But yeah.. it sucks to find your stuff reposted by someone else without any reference at all and that guy gets all the credits and the likes.. doesn't matter if it's paid or free content. At least that's why I started to watermark my stuff.