I hardly can judge other's ethics (regarding airline-/hotel-frequent-flier/-guests programs)- I don't want to be the judge.

As long as the written 'official' rules of such programs are as onesided as most of them are, I personally draw the line for myself and for sharing experiences/tips that some may find unethical on this board extremely wide ...

In the early days of FlyerTalk nobody ever did protest against any of my posted approximatly 50 guerilla tips, how to beat the airline's (frequent-flier-) system! Randy's magazine editor than even asked me, if they could use some of those tips in their publications.