I'd imagine the bandwidth for a porn site is huge, imagine having all that bandwidth dealt with by someone else for free! plus the porn industry tends to get in on new technologies early so Id be surprised if there isn't some somewhere.

Unrelated to porn this sort of thing could be great in general as all the content is searchable it would be a goldmine for information on how to use a function or do some specific action. I already use git as a codex of sorts!