I think the truth is somewhere in the middle. I think that by offering a service (even a free one) you create a reasonable expectation that you will, in fact, p

I think the truth is somewhere in the middle. I think that by offering a service (even a free one) you create a reasonable expectation that you will, in fact, provide that service. You clearly retain the right to stop providing the service whenever you want, but you still have an obligation to treat your users with respect. It's bad form to hold up a sign that says FREE CANDY and then punch people in the mouth when they ask for some.