I have no id because I did not win yet but according to their "how it works" -page they pick a winner every day who wins the entire jackpot... The money is from advertising and sponsorship deals. They say the more people visit the website, the bigger the jackpots will be which is logical if the money comes from advertising. Anyway, since it costs $0 to play and you do not need to give any creditcard information (also not when you win according to them) there is not much to lose is there?
And also I do not like to think I could have won $$$ but didnt because I did not play...