Wikipedia, an online encyclopedia compiled by a distributed network of volunteers, has often come under attack by academics as being shoddy and full of inaccuracies. Even Wikipedia’s founder, Jimmy Wales, says he wants to get the message out to college students that they shouldn’t use it for class projects or serious research.

Speaking at a conference at the University of Pennsylvania on Friday called “The Hyperlinked Society,” Mr. Wales said that he gets about 10 e-mail messages a week from students who complain that Wikipedia has gotten them into academic hot water. “They say, ‘Please help me. I got an F on my paper because I cited Wikipedia’” and the information turned out to be wrong, he says. But he said he has no sympathy for their plight, noting that he thinks to himself: “For God sake, you’re in college; don’t cite the encyclopedia.”