For the time being,Top going site in PTC business!

The name of site is Clixsense,
Its been online since February,2007...
It has a different way to earn!
More over it has 8 level deep referral program :)
Gives around 10 ADS worth 0.01$
Join the program here:

Good thing is,
It offers  a upgrade for all members worth 10$ per year!
After upgrade,
You will be eligible to get 2$ per direct referral upgrade and 1$ for every referral upto level 8.
Give it a try...