Now that the world cup is ongoing what gambling platforms are giving out free football predictions that can earn some one good money with zero money involve? Huobi exchange claimed they are doing the same but once you embark on the journey you will find out that it's not real free.
You can refer on @Royse777 thread
https://bitcointalk.org/index.php?topic=5420882.0 for the list of casino that gives free prediction for the world cup with zero money involved. And also Sportsbet is consistently giving away free sports prediction contest on games and round board on different sports without any money requirements on it.