There are some very well known book lists, but one of the most popular and coveted lists for an author to be on is the New York Times Best Seller list. Other lists that are widely used by readers are lists on the Goodreads and Project Gutenberg sites.
Goodreads is popular with many readers and has a high number of members and lists. There are several authors who have pages on the website and often have question and answer sessions with readers. Project Gutenberg compiles information from how many times a book gets downloaded through http sites and ftp sites. The New York Times Best Seller list is based on book sales for a specific time period.