The best way to make money on PTC sites is by getting direct referrals. This is a great way to generate passive income online.
Tag: Prolific
Prolific is one of the best survey sites available. The site has been online since 2014 and has gained high popularity.
Members are earning money for participating is academical surveys and for referring others to the program.

Prolific review – Earn money online for doing academic surveys
Prolific is a survey site that connects those doing research with their target participants. Members earn rewards for participating in studies.

Start earning money online with GPT sites!
GPT Sites offer one of the easiest ways to earn money online. They have been online for years and their popularity is always increasing.

How can I withdraw money from PTC and GPT sites?
Once you have start earning money from PTC sites you have several e-wallet options to withdraw your money depending on the site that you use.