The "anal sex" part is pretty self-explanatory and the "HDV" stands for high-def videos. Put those two together and you got yourself high-def ass-fucking videos on Anal Sex HDV. This site is actually just a small part of Premium HD Videos, which is a pretty large site that brings you content in several niches. Anal screwing is just one of the many channels it offers.
The content is all exclusive to the PremiumHDVideos network, but not to the channel itself - as I found out when I checked out some of the other channels and saw some of the anal scenes among them. There are 163 episodes on AnalSexHDV, though, and each of the scenes come with a set of high-res pictures and a video that you can stream on the site on an embedded Flash player or download in a gorgeous HD MP4 file. There are also other quality options (smaller files, but they still look great) and a portable option.
It looks like they add about seven new episodes each month, although there is no set schedule. The action is hardcore with lots of ass banging (not just a little moment in the butt and back to the pussy). The pornstars are gorgeous, the camerawork is solid and the quality of the content is also a plus. You can leave your own mark on the material by commenting on the action and rate it, so your fellow members know that it's hot-to-trot.
The chicks you see here aren't new to the industry either, you're getting well-known names and some of the biggest dicks in the biz too. Alexis Amore, Aletta Ocean, Rebeca Linares, Darryl Hanah and Vanessa Lane are gals you see bending over for some ass poking and these scenes also give you anal creampies, some gaping and DP with fingers and toys.
Even if you see some repeats in the other sections, you're getting a ton more content. Some other channels to peruse are Group Sex HDVs, Big Tits HDV, Oral Sex HDV and POV HDVs. There's a link for some live shows, but it takes you to a cam site where you'll have to pay extra to get anything really good. There are some bonus videos in the "extras" and you can snag some discounts on other porn sites.
Anal Sex HDV is worth a look as is every channel on Premium HD Videos. There is enough anal content already that you can get many months of enjoyment out of it no matter how they decide to do the updating. And if the bonus niches interest you, then you might also find value in sticking around even longer.