The second part of the series (at this rate I'll cover every installment) with another good catchphrase: "When there is doubt, err on the side of the user." Again, I agree with this. Despite the warnings placed on books and multimedia, we do have the right to use copyright material for certain purposes, including citation and criticism, satire, and educational purposes. Pretty much every case of use we're likely to run across in the educational domain is what one might call a 'good faith use' - there's no intention to violate copyright, there's no internt to make a business out of someone else's content, they just want to make, as they say, fair use of the content. In such cases, the user is probably in the right, and there are no good ground to assume, a priori, that violations are occurring.