Cachers are not required to play along and place a cache if they choose not to do so. The ‘Pay It Forward’ concept (by GerbilMafia) is as follows: If YOU find and log THIS cache, EVERYONE... not just as the FTF, then in return YOU should place a "Pay it Forward" cache of your own. Then when everybody finds YOUR cache, they do the same, and so on, and so on. Maybe you can bring a stocked cache container with you and place it on your way home after finding this one, or maybe you already know of a good location. Either way, this series has the potential to grow very fast. Once you place your cache, simply name it "Pay it Forward" with your cacher name attached, example----Pay it Forward/CacherJohnDoe.
Blah, blah, blah. Find the cache and hide another if you want to.