PTC sites are simply called Paid To Click sites, that pay you with real money for viewing advertisements listed on their website. This method is best useful for newbies who are new to online money making.
How Much Will I Get Paid?
Every PTC site will pay around $0.01 to $0.05 for every AD you are viewing. If the AD view time is long probably you will be paid much more and inversely proportional. All your earnings will be paid instantly
What are Referrals Earn for Me?
Referrals are the people who are just like you are working on these sites. Only thing is that they had joined using your referral link that is, you are the sponsor.