The website for Hostel 2 is online, but if you're squeamish I suggest you don't head over there. It opens with a moving image of the upside down woman in the poster making very unnerving pleading and begging noises. It's creepy as hell. I have to say it's pretty slick as far as web design, though.
There's a trailer up along with a gallery and plot synopsis. You can also download a number of Hostel-related backgrounds for your computer desktop, but I can't imagine who would want to.