Bestseller Lists on the Web

Amazon.com Bestsellers
Amazon lists their top sellers in many categories including Literature and Fiction, Nonfiction, “Hot New Releases”, Books on CD, and more.
Book Sense Bestseller Lists
Book Sense surveys independent bookstores around the country to create bestseller lists for Fiction, Nonfiction, Children’s, and more.
Publishers Weekly Bestsellers
Publisher’s Weekly has lists of bestsellers in several categories  including Audio, Children’s, Fiction, and Nonfiction.
The New York Times expanded bestseller lists
See the New York Times Hardcover Fiction bestsellers list, the Nonfiction list, the Children’s list, and more.
USA Today Bestsellers
USA Today lists the top 150 bestsellers of any genre in one list, with links to their reviews of selected titles.