2 Motorola Style IR Cables to one set top box

One of our customers recently asked us for a solution to the following problem:
He had two TVs in two different rooms both connected to the same set top box which was located in his closet.  He was already using the motorola style IR receiver to control his verizon fios box from one room, but wanted to add a receiver for the box in the second room.  The answer was simple - the IR receivers can be wire or'd together with a simple 1/8" stereo jack splitter cable.  It worked out so well we decided to order a bunch and they can be ordered for only $5.50