Similar to now defunct Hub Traffic (for PornHub and some other major sites) is the Xhamster traffic partner program. All you have to do is join and create a porn tube site. From there you just add your domain to the xHamster panel and then they will track the traffic you send them and pay you accordingly.
Xhamster will pay you $2 for each 1,000 you send them CPM. This is for high quality traffic, if your traffic is fake or junk then they won't pay you much.
Read out guide on how to make a porn tube site to get started today. We recommend you pick a great niche and don't make a generic site catering for all categories.