rafflecopter窗口小部件如何工作？
you can use your email to login or facebook and select from the options; you can select how you would like to score points. you have the option of scoring as many points as possible, including a custom 'refer a friend' link.
you don't have to share daily, but if you do share about the giveaway every single day, that's more points that you score. that means, when the rafflecopter ai randomly selects a winner, you have more chances of winning because you scored more points.