The Geek Atlas is not just a book, it's also a web site. Over on The Geek Atlas web site you'll find information that complements the book such as photos, videos and trip reports.
And it's intended to be a community effort. Have you been to one of the places in the book? How about uploading your pictures or video? Or write a trip report.
Did I miss a place that really should have been in the book? Jump into the forums and post about it. If I get enough ideas perhaps there'll be a second edition :-)
Has something changed about a place (such as opening hours, cost, etc.). Come tell me (and the community about it).
It's as much your web site as it is mine. Drop by geekatlas.com.