On Lists of Bests you can create and find lists of products, places, goals and people. And books, of course. Basically you will be able to find/create three types of lists here.
Personal list - A personal list that can only be edited by you. Other people can take inspiration from your list (eg My 10 favorite Dublin Pubs) and copy the list for their own use, but only you can edit your version of the list.
Definitive List - These are pretty much set in stone. Examples are Rolling Stone’s "Readers 100" (a list of public record) or the 50 States of the USA (a factual list).
Award List - This is an annual awards list by a credible source. Examples include Booker Prize Winners, Academy Award’s "Best Picture" and "Album of the Year" Grammy Award Winners.
While the Personal Lists may be quite entertaining, I think it's great to just have a place to check out those Definite Lists and Award Lists (no matter whether it's about books or any other topic).
Want a taste?
Nebula Award Winner of 1984? Neuromancer (William Gibson)
Bram Stoker Awards Winner of 1996? The Green Mile (Stephen King)
Pulitzer Prize for General Non Fiction of 1969? The Armies of the Night: History as a Novel, the Novel as History (Normal Mailer)
Tony Award for Best Play Winner of 1953? The Crucible (Arthur Miller)To name but a few.
Then there are the "real" lists, eg Random House Modern Library's "100 Best Books of the 20th Century: Fiction (Reader's List)" or 500 Great Books by Women (taken from: 500 Great Books by Women: A Reader’s Guide by Erica Bauermeister, Jesse Larsen, & Holly Smith).
A lot of these lists are, in fact, community lists which means that you can contribute, edit, or help maintain them. Despite some lists not always being up to date, with eg latest winner not yet entered, this site is generally a wonderful source for book-aholics, or shall I say, list-aholics?