The only time I've ever had someone complain about the "you can't make money" part of the sentence is when they're trying to run a con. Usually this involves some scheme to chop up my book and sell it on Amazon or put it up somewhere else and put ads on it. The problem with this is then the author is left with mounting support costs for all these copies sold since buyers can't tell the difference between the copies I wrote and the copies the con artist sells. They buy it then email me when they get stuck, so I'm left spending my time making somebody else money.

Anyway, I have a whole rant on how the CC licenses try to do to copyrighted art what the GPL/BSD does to software and how it just doesn't work the same.