You've got a nice little guide. Not sure if it's getting added to anymore, but how about putting a link to the file
Kindle-Tips-for-K4-NT-1st-Edition.mobi in the beginning of the book?
Kind of like the
The Magic Catalog of Project Gutenberg E-Books or Mobile Reads very own
Mobipocket Download Guide. You could easily download the latest K4 Tips.
Cheers!
jT