This pop-up message informs you about the Loyalty Program, and in order to take advantage of it you need to purchase Reward Points, and for every dollar spent, you will receive one Loyalty Point. Except for the Emerald Program, there are two other that give you Loyalty Points:
Gold Loyalty Points: earn 2 LP for every $1 on select purchases
Platinum Loyalty Points: earn 4 LP for every $1 on select purchases
With the Loyalty Points you can purchase Loyalty Crates which have some really cool loot items that will certainly boost your stats in Mafia Wars.
What do you think about this Loyalty Program in Mafia Wars?