The next Xbox is going to have porn streaming. Now every kid has all he'll ever need: Master Chief, Call of Duty, and porn. GG Microsoft. http://www.escapistmagazine.com/news/view/124078-Streaming-Porn-Service-Coming-to-Next-Xbox
IDK, Xbox 360 doesn't have one and I don't know if the new one will. Besides, you'd need flash and from my experience with the PS3 and Wii browsers a lot of sites don't work right.
But it seems to be available on every major console out there, why would it be surprising that it will be on the next Xbox?