I think the major selling point from what Gary said is "stop in and place it in his or her hand." I think same with a cd. In my experience anything you blindly send in the mail or leave on a doorstep you might as well save them a step and put it in the trash yourself. IMHO If I meet someone that hands me something it adds a new dimension.

Russ,
in your research did it make a difference if the item was hand delivered with a brief meeting?