Rob's note is thoughtful, and makes good points, but it should be noted that it is *not*
actually describing the requirements of the GPL; it's describing how close you have to get to
the GPL's requirements before Rob stops caring about suing you. Anyone in the position of
distributing GPL software in a device would be smart to follow his advice, and the community
will surely appreciate it... but they should *also* read the actual legal requirements set out
by the GPL, and follow those too, to avoid liability from all the other authors of GPL
software who aren't Rob.