Squeetus is the official site for author Shannon Hale, recipient of a Newbery Honor for Princess Academy. The site offers information on her books, biographical information, games, events, and a rolling blog along the side. It is very nicely done.
The Association for Library Service to Children has announced a new campaign as part of the @ your library series. The site is just starting out right now, so several areas are not ready yet. Look for their theme song sung by Bill Harley to be available on the site in June.