All art on that website is also copyrighted. Keeping your hands off of other people's work is a good idea.
"Art by XXXXXX"
I know, I'll rob your house, and when I pay for something using your money, I'll attach a note saying "money by BloodShadow".
LOL amen, vrt. Artists get ripped off for several reasons:
1.) they do not know enough about copyright to protect their intellectual property
2.) people who use art do not know the practical meaning of "fair use"
3.) people who use art do not know how to give proper credit
4.) people who use art do not care about copyright at all