In a blog post about intellectual property (which is its own can of worms), the author stated:
... moral questions come up when there is a choice over who gets harmed. If you're in a situation where no one gets harmed, then there should be no moral question.
This seems like it is related to the mirror image maxims: That which is not prohibited is allowed and Only what is permitted is allowed.
Over at AlterNet, Greta Christina discusses the difference between liberal and conservative (both in the old senses of the words): Get a Brain, Morons: Why Being Liberal Really Is Better Than Being ....
So, is harm (or not) to others a good basis for founding morality? How far does the concept of "others" extend -- does it include "things"? Is morality a means of conservation or is it a means of liberation?