Blog Book

I recently came across a service that turns your BLOG into a BOOK! Holy moly, the things that can be done these days! mI didn't know that you could do something like this.
As it turns out, there apparently a number of services that will do it for you! Here are a couple examples and the places to find them. I have not looked at all of these so I don't know much about them, but I thought it was a cool idea.
http://www.blurb.com/
http://www.blog2print.com/
http://www.bookemon.com/
http://www.lulu.com/