It seems the porn industry is warming up to Bitcoin. GadgetCoin actually started to work with the porn industry
http://bit.ly/1LDeFdL Using Bitcoin, the blockchain and smart contracts GadgetCoin offers 95% cash out for the web-cam models
http://bit.ly/1GUAH7vi don't think any altcoin would be able to provide any liquidity to a web cam business or a business model is they are not backup by btc revenue in order to keep the price stable.