Columbus Metropolitan Library: If You Like...
Hennepin County Library - Readers Online (Searchable database of
subjects and genres as well as an if you like... page.)
Christchurch City Libraries - If You Like...
Morton Grove Public Library - Compilations of books
on a particular theme, authors with similar styles, etc.
State Library of Tasmania - Read Alikes
San Antonio Public Library - Book Lists and Read Alikes
San Francisco Mystery Bookstore - If You Like
If You Like (Romance)...
Oprah Read Alikes
For Book Lovers - Websites for Readers - Booklists
and Read Alikes