Tweetbook, as the name suggests, is a free web service that will create a nice diary-like PDF book of all your own tweets as well as tweets that you may favorited on Twitter. You may use the PDF as a backup of your Twitter account or even for printing your tweets.
Tweetbook uses uses oAuth so you don’t have to share your Twitter password with the service and it only requires permission to read your tweets. The service is integrated with Scribd so you can immediately publish your PDF ebooks online without having to download the file to your computer.
For example, the above PDF book is a compilation of all my favorite tweets while the second one – Twitter Archive – contains every single message (around 1800 now) that I have posted on Twitter ever since I joined the micro-blogging service in January 2007.
Other than creating PDFs, you may also use the Tweetbook service to save all your Tweets offline as one XML file for the purpose of backup or in case you want to import your tweets into another CMS system.
Due to restrictions in the Twitter API itself, Tweetbook can only fetch and convert your latest 3,200 tweets into a PDF ebook. This is still a fairly decent limit unless you are someone like @Scobleizer or @GuyKawasaki who have been on Twitter for long and continue to post a few dozen messages every single day.
Related: Do Interesting Things on Twitter