Honestly, I still do best with pay sites they convert much better than cams or dating. It is just you need a very high volume of traffic to make money at it. I have always made money at this business when I do something everybody else isn't doing. Tubes for the small webmaster are dead at best you're going to get about $.02 a click running some kind of filler ads, and if your real lucky maybe your pop unders will net you a little less than $2 a thousand severed on your first world traffic.
If you look at Mindgeek's latest project they are pushing:
Thumbzilla is Back! Free Sex Movies & Fuck Videos Online
A Tube with no ads and 720p video.
Notice it is all about pay sites again. The videos have link to the respective paysite the video is from there are no dating offers, cam offers or penis pills anywhere to be found.