Well you can read my explanation below or go to moola.com and click on How moola works for a tutorial
First they give you a penny to start with and you play games...all games take 4 mins or less everytime you win your money doubles.... so if you were to win 30 games in a row you'd win over 10 million. It seems small to start off with but remember your money doubles with every win...cash out via check, paypal, debit card etc.
Its insanely easy and costs you nothing
10 wins you will have over 10 dollars...from games that take 4 mins or less each! so with skill or a bit of luck on your side you can get paid for playing games
(they have everything from rock paper scissors, to yahtzee, blackjack,poker, slots, bet on real life sports, etc)