Board Thread:Tips, Tricks, and Questions/@comment-96.251.6.158-20130921203605/@comment-6459948-20130925032544

IVe never gotten them to work, it always comes up with a "already collected message"

Presumably you can only ever get one of those free grabs per account for the entire time you play. So if you have 5 friends who play, you cant send each other 5 free grabs a day.