We saw and liked fiverr, but we didn't want to do just a clone site of it since we felt they had the market pretty cornered. We'd just be a "me too" player. Looking around we realized there wasn't a good system similiar to fiverr for adult. That's when we decided to test it and see if there was a market. We've been surprised.
Pornification has been going for some time, it just hasn't been well publicized (since mainstream tech news doesn't really cover porn unless there's something crazy going on). Youtube / youporn is a great example of one. In addition the site gamecrush.com is very similar to the adult webcams sites that are up. They added the twist where models can't be nude and they play video games with customers.