I now have a website for The Universal Machine, ready for publicizing the book when it's published next year. At the moment there's not much there - just the book's Twitter feed and a feed from this blog. Once the book is published there will be purchasing information, some videos and podcasts and reviews of the book (hopefully good ones).
The URL for the website is: http://www.theuniversalmachine.com
I now have all the elements in place for the digital promotion of the book: website, Twitter account, Facebook page, Google+ page, blog and an Amazon.com author's page.