Paul Markham Content Store.
Adult Internet Porn Content and adult mobile phone content.
No need to buy it semi exclusive. non excluisve works far better. Buy it and launch it as soon as it's released, you might be able to do a deal with a content producer to get it before release, then keep buying and keep adding straight away.
The benefitrs are simple, content your surfers have not seen and a lot less money. But always buy on the content being right for the surfer not price. That's far cheaper.