Even after all these years, I can't help but assume this is all a giant trick to get people to visit the site again. Like the article says, my fingers refuse to type the domain.
I remember during the heat of the youtube audio mute massacre, someone posted the rickroll video along with the title, "Youtube mutes rickroll". We all fell for it.
This is how I first learned about CSS circa 2001. More importantly, you could provide your browser user-defined CSS.
My first entry? Making any link from goatse.cx struck-out and brown.
It seems fine at the moment, just a (crappy) landing page. Still, I would never open an email from such domain.
The logohead says Goatse✉Mail. I would go so far as to say I'm just the tiniest bit disappointed that their symbol is, as far as I can tell, innuendo free...