Specifically when it comes to niches and generally overall?

For example, popular pop-culture has to be high on the list, if it wasnt for the sudden influx of reality television shows, we'd have never had that whole 'reality' craze in the adult industry a few years ago, which in turn means we wouldnt have had the whole 'movie' or 'exclusive' content boom, and we'd still be using regular traditional style tours rather than reality or eposide style tours.

So, other than pop-culture, what else do you think effects how the industry grows and develops overall, surfer demand, site owner demand, what made PPV and On-demand sites explode in the past few years, etc, etc?

Regards,

Lee