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I have a potential offer to do some work that mines data from several websites. As I've never done this before I was wondering if this is moral and / or legal?
It seems a bit of a gray area to me.
First of all, thanks for all the responses!
Second: to clarify, I believe the data will be used to aggregate certain business models. For example (and this is not the use case) crawling automotive sales sites and creating a master list that is "all in one place". So I don't think it will really contribute back to the sites from which the information is gathered, but it could potentially be useful to the consumer in the end.