Mafia Wars Mystery Shipments offer just the building parts your friends need
Zynga seems to understand this, as they have brought their "Special Delivery" system, first seen in FarmVille, and then spread to other games, to Mafia Wars proper in the form of Mystery Shipments.
These Mystery Shipments are available to send to your friends as a free gift, with your friends being guaranteed to receive a construction part that they need for one of their buildings, whether it be something for the Weapons Depot, the Car Shop, or otherwise.
While you're free to continue sending your friends whatever you want in terms of free gifts, keep these in mind for the players that you know have everything - this way they're sure to get something they need and probably want!
What do you think of the new Mystery Shipments in Mafia Wars? Let us know in the comments.