My two cents - the woman and her partners in the website are definitely violating trademark law. I did go to the site (for purely educational purposes, I can assure you ). There are an abundance of images that depict the characters of Mary Marvel and She-Hulk as well. The company also offers these characters up in photo shoots and "movies" designed to simulate the types of adventures these character participate in for their legitimate trademark owners.

As to the assertion that this is DC's fault for not making Supergirl movies, by the same logic, I suppose, I can be excused if I write and attempt to sell new Harry Potter novels because Jo Rowling isn't going to write any more of them. And it would be her fault and not mine. Pretty nice when the perpetrator can blame the victim.

BTW - DC and Warner Brothers ARE utilizing the Supergirl character. She is a member of the regular cast of the "Smallville" TV series and there has been talk of featuring her in a spin-off series when "Smallville" wraps up at the end of next season.