basically you sign up, and others sign up under you and you get paid when they sign up, its not a lot of money, but if you did what they say you can do, (if everyone that signs up gets 3 others to do the same) than you end up with lots of money. and most importantly it dosn't cost a thing!!!
there are 7 people under me right now and i've made $1.60, i know now a lot of money, but i didn't do anything and hopefully more and more will sign up.
hope thats clears it up a little.