Pursuant to my search: these days Google turns up sacredporn.org as the first hit under Seidman's name; but entering the url, I get a plain black screen. I'm assuming this is some sort of censorship, but by whom?

I really admire Scott Seidman's work.
I had an exhibit space across from him at the 2006 Tom of Finland Erotic Art Fair, and was fascinated by his painting of a white centaur chasing a butterfly...very sinister but very beautiful and tragic.
He was selling the piece for a shockingly low price, and it was as finely-painted as any renaissance work, and better than many! I fantasied that I would buy it with my inheritance (which never materialized), keep it for a few years, and donate it to the Los Angeles County Museum of Art.