It's Banned Books Week! Read a banned book! For a list of books that have been banned or challenged visit the American Library Association's website for the 100 Most Frequently Challenged Books of 2000-2001 and the Top Ten Most Challenged Books of 2004.
In January 2007, all new books will have ISBN numbers that are 13-digits long, instead of the previous 10-digit ISBN numbers. If you want to read about this in depth, download this. It's most likely way too much information for non-librarians (and perhaps even too much info for librarians - I don't know, I haven't read it yet).