Excellent use of the .xxx domain name. If people start using .xxx for normal writing, the concept of "one place to conveniently censor" will not work out. Heh.
edit: assuming you're not being sarcastic, can't tell.
They might not care about "rules" or "society" or this and that they might say, but it's inconvenient for me. Even though I am not offended easily, some of my coworkers, bosses, classmates, people on the bus, etc might be. If it's inconvenient for me to view the site, use the software, or have the album art showing on my iPod/computer, I'm going to avoid it even if I like it.
That's their choice, I understand. They made the determination that there are people who could appreciate their work but aren't willing to take the same hit to their reputation. It just disappoints me as a fan.