Here's an excerpt from Jessica Ann Salmonson's takedown of this zombie Randian fib, linked to above:
"On UseNet, a lass posting by the name of Sue offered the following heartfelt statement as though it were a fact, in defense of Ayn Rand:'No less a body than the Library of Congress conducted a study a number of years ago & found that Atlas Shrugged was second only to the Bible in terms of the number of people greatly influenced by it.'
That assertion is of course nonsense, but it's surprising how many credulous naifs believe in the urban folk tale about the Library of Congress having undertaken such a survey or study proving Ayn Rand the #2 author in the universe. It has been repeated on UseNet & the World Wide Web thousands of times, without anyone being able to cite the specific study, because there was none, but by weight of repeating a legend, increasing numbers of naifs begin to assume it must be true..."
Go ahead and read the whole thing.