VeeAny,
Thank you for that link; I've printed the document out for future reference.
However, I fail to see how free flying equals "valuable consideration" or "provision of goods and services".
Look at it from the point of view of someone who doesn't want to fly. If, after a long week of instructing, you said to me, "You can fly my R22 from one end of the country to the other for free" I'd tell you where to put that suggestion. But if I hadn't flown for six months, I'd think it a really great idea. So, how come? It's either valuable consideration or it isn't; you can't have its worth depending on how the receipient feels about it. And nowhere in that document does it even suggest that free flying in and of itself is valuable consideration.
You can't put your own interpretation on the rules just because you don't like the way things are.