Neobux and ClixSense are present in PTC world since 2008. You don`t have to invest any money. Just click ads,do tasks ,mini job,offers and surveys and you will earn money.
To do tasks you must register on CrowdFlower. Register here:
You must reach level to earn more money for every successfully completed task.
I recommend to install ClixAddon and Neobux AdAlert to get informed instantly when a new task or new ad show up.
Spidermetrix is Australian survey panel where you complete surveys and get points. Surveys are on daily base and for some countries you can find more surveys per day. When you earn minimum 300 points you can cashout by Paypal,check ,get voucher for Amazon etc.
Best site with many opportunities. Many ads daily ,you can earn for cashout in short time. Cashout are sent to Paypal and Payza. Important to say is that you don`t need to invest a single cent.