The response to Nancy Pearl’s surprise bestseller Book Lust was astounding: the Seattle librarian even became the model for the now-famous Librarian Action Figure. Readers everywhere welcomed Pearl’s encyclopedic but discerning filter on books worth reading, and her Rule of 50 (give a book 50 pages before deciding whether to continue; but readers over 50 must read the same number of pages as their age) became a standard MO.