All tube sites you mention are offering copyright protected videos, these are the illigal tube sites. Try creating a legal tube site, a legal tube site only has videos that are being offered by the sponsors to promote their product. I am not saying this is a 110% safe deal, but pretty safe ! Don't burn yourself on the illigal stuff, plenty of discussions about that on GFY.
A good script is
STXT from
Smart Scripts. They have a build in system that lets you add sponsors with videos in minutes and the script does the rest for you. Dont forget to link the sponsers from your video pages ;)
Good luck
