One problem is that a lot of programs don't make it obvious how much they plan on sharing. I usually figure that any information they get from me will just be

One problem is that a lot of programs don't make it obvious how much they plan on sharing. I usually figure that any information they get from me will just be used to get higher-rate advertising, and maybe set the time on my homepage (yawn). It doesn't even occur to me that they might want to use my location as a "feature", and not to deliver advertising.