Refferal programme

Most sites that require you to do some work for pay also offer a referral program. This is because they want more people producing for them so that they increase their earnings. You can make a substantial amount of money by referring people to these sites and earning a percentage of their profits.
The web sites which are allowing refferal programme

http://www.earnparttimejobs.com/index.php?id=2809393

http://www.time2rich.com/ashok1234