phpImapMailNotification is small and free PHP script that allow to check multi-email accounts (over IMAP PHP functions) and send notification email toward other email account (SMS Gateway) if you have a new messages.
"My Books" is application for facebook.com
that allows users to share which books to read now and what is read.
Application is linked to the online bookstore bulgaria-books.com and
has a huge catalog of titles that are available in Bulgaria.