Kyle K. Courtney has self-archived "Copyright in the Digital Age" in SSRN.
Here's an excerpt:
The goal of this chapter is to provide the fundamental instruction for some of the most popular topics facing law libraries in the digital age. Whether it is scanning chapters for e-reserves or accessing databases online, knowledge of copyright law can help mitigate risk, and enhance our patron's services. As librarians, we want to provide whatever our patron's desire. But, we also must balance the law versus the patrons needs. Fortunately, copyright law does not always restrict a patron's uses. In many cases a solid understanding of copyright can help ease a patron's fears, or provide legal alternatives to a patron's request, or help educate the community at large.