Tools for the 21st Century Teacher

I'd like to share an e-handbook I've read about in the WIA e-list today with great Web 2.0 tools. Michael Zimmer's "Tools for the 21st Teacher".
http://issuu.com/mzimmer557/docs/tools_for_the_21st_century_teacher/
You may read this book right here:

Open publication - Free publishing - More 21st century

Actually, I had an idea to publish our newsletter like this e-book. It is free and easy to create, as well as looks very nice and easy to read from your screen, doesn't it?