AFTER scanning his textbooks and making them available to anyone to download free, a contributor at the file-sharing site PirateBay.org composed a colorful message for “all publishers” of college textbooks, warning them that “myself and all other students are tired of getting” ripped off. (The contributor’s message included many ripe expletives, but hey, this is a family newspaper.)

All forms of print publishing must contend with the digital transition, but college textbook publishing has a particularly nasty problem on its hands. College students may be the angriest group of captive customers to be found anywhere.

Consider the cost of a legitimate copy of one of the textbooks listed at the Pirate Bay, John E. McMurry’s “Organic Chemistry.” A new copy has a list price of $209.95; discounted, it’s about $150; used copies run $110 and up. To many students, those prices are outrageous, set by profit-engorged corporations (and assisted by callous professors, who choose which texts are required). Helping themselves to gratis pirated copies may seem natural, especially when hard drives are loaded with lots of other products picked up free.

But many people outside of the students’ enclosed world would call that plain theft.

Compared with music publishers, textbook publishers have been relatively protected from piracy by the considerable trouble entailed in digitizing a printed textbook. Converting the roughly 1,300 pages of “Organic Chemistry” into a digital file requires much more time than ripping a CD.