Using QR Codes for market research

Thanks for generously agreeing to give up some of your time to provide me with your feedback about the content of my book. I’ll use this information to improve the book and, if you are on my customer email list, I’ll let you know each time it is updated.
When you send in your feedback it will go directly into a Google Docs spreadsheet that I review from time to time. You can use the same approach yourself.