Well, it has worked for people, just take a look at those links i posted. and as to how many people this will actually work for, i would assume the maximum would be 1/5 because every person needs 5 referrals. However, since most people do not end up completing referrals, then it's most likely less, so in effect, the site can probably actually afford to send out an ipod getting money from the advertisers. The only difference is, I know for a fact I can get five people to complete the offers. If you think you can as well, then what's the harm in trying?