instructions?, if you use your common sense u can undestood its easy, and instant!!
facebook name coz we would like to know who is the winner! ,i guess others like to know too,if they have desire to find out who will be the winner.
Common senses?? There are many kind of lotteries in this world, not all are the same. One more important thing, is your machine provably fair? How do we know if the winners are real? Just by facebook account?
Ok you want to know the winner by the facebook account, but how if the players want to stay anonymous?