For those that are unaware of Fortunejack's recent promo then you guys need to check it out here https://bitcointalk.org/index.php?topic=1701601.0

Basically you got few btc just for wagering in the site and this is nothing that you could skip as you could get up to 0.04 btc just for wagering 0.6 btc or more in the site  . I have done mine and waiting for my reward the next day, will update this post once I got mine