Issues concerning intellectual property are not always so cut and dried. An example of one such blurry situation is the current court battle involving Harry Potter author JK Rowley's claims against Steve Vander Ark's upcoming Harry Potter lexicon.
At the beginning of each semester, many university students seek to buy used textbooks. To them, original ones are thought to be too expensive, and photocopies unpleasant or unethical. Unfortunately, in most cases, such students have no systematic way of locating the used textbooks they need. Most of them ask around randomly; some try their luck at bookstores.