What is PTC, you ask. PTC stands for "Paid To Click". Paid to click sites are websites that offer you a great chance to earn extra money just by viewing the websites of the advertisers. These PTC sites earn money from the advertisers who pay them for showing their site for the members. YOU as a member will be earning money online by viewing those sites, singing up for offers and similar things. You can also get some extra money by referring your friends to these PTC sites. You can get paid once you have reached the payout limit which is usually quite low, around 2 US dollars. Most sites use payment processors like PayPal, AlertPay, LibertyReserve and checks.
I hope you got some kind of idea what PTC sites are. Now you can start earning money by joining some of the sites here. Also remember to add my sites to favorites so you can check the latest best PTC sites.