To answer your questions:

Quote Originally Posted by Dr Green
Do I need a license since it's porn?
If by license you mean do you have to pay for anything extra outside of vShare, the answer is no. You do not need anything special from vShare to setup an adult site. Keep in mind that I'm only referring to vShare. If your country requires you to have a license to run an adult site/business, you'll need to acquire whatever you need from them.

Quote Originally Posted by Dr Green
Which hosting company do you guys recommend?
None. I recommend that you get your own server. Preferribly, one that provides you unmetered bandwidth and plenty of space.

Quote Originally Posted by Dr Green
Do you guys pay other websites to have their content on your website?
No. It's the other way around. Content providers pay me to have their content on my site.