Vagex

Vagex is a view exchange site for YouTube. You simply download a program that will automatically watch, subscribe, and like YouTube videos currently in the Vagex database in exchange for credits.

You can use these credits to get views, subscribers, and likes for your own videos or simply exchange those credits for cash once you've achieved the $10 threshold.

http://vagex.com

The current conversion rate is 1 credit = $0.0001 which may seem quite steep, but you're not doing any work so it's worth it to leave on while your computer is running and more so if you're after views/likes instead of cash.

Proof that they pay!