Just an FYI, the BJCP guidelines are available in Kindle format at http://www.bjcp.org/stylecenter.php.
I just got this Kindle and was happy to see that the Kindle version existed. All the styles are hyperlinked through the table of contents which makes it infinitely more usable (on the kindle) than the PDF version.
Sweet, I've been using the android one for a while. It seems like at competitions these days more people are using a phone than are using paper guidelines.