Sign On, Turn On

Kink.com
HOW HARD-CORE: * * * * *
COST: $29.75/month
Hard-core video action divided into a dazzling array of special-interest categories (HogTied.com, MeninPain.com, WhippedAss.com...). If "kink" conjures up quirky, vaguely racy images for you, prepare for a shock to the you-know-what. We found the clit clamps, strap-ons, and anal insertibles a bit intimidating, but enthusiasts rave about the site's "respectful and positive" approach to BDSM play. We agree, master.

RedLightCenter.com
HOW HARD-CORE: * *
COST: Free to enter; $20/month for VIP membership
Second Life fanatics will recognize this setup, wherein you go through a virtual world with a character based loosely on yourself, to interact -- and we do mean interact -- with other avatars. Just note: Your cheap thrills will cost you. It's free to troll, but only paying VIPs can drop their clothes. Once again, art imitates life.