The FAA is requiring all operators of small unmanned aircraft systems between 0.55 and 55 pounds to register. This is to help ensure that operators of model aircraft and drones act in a responsible manner, etc.
In the Registration and Marking Requirements for Small Unmanned Aircraft document available from the FAA (PDF), there are examples given of drones being flown near wildfires that interrupted firefighting efforts, despite a
temporary flight restriction for the area surrounding the fire.
It seems obvious to me that operating an RC aircraft near a wildfire might not be a good idea. However, "temporary flight restrictions" could exist in other cases that aren't quite so obvious. There is no requirement (as far as I know) for sUAS operators to check NOTAMs, aviation charts, etc.
How can an operator be sure they are in compliance in every situation? It seems like it might be very easy to violate some regulation inadvertently.