To Celebrate Presale of The Edge of Knowledge Audiobook

I am providing a promo code for a free copy of the audiobook to the First 5 Critical Mass paid subscribers to request it.

Hi.. The audiobook of The Edge of Knowledge just went on presale today on Audible/Amazon. It will be released on May 9, the day the hardcover is released To celebrate, I am providing below, instructions for paid subscribers to request a promo code. The first 5 subscribers who do so will get a promo code to get a free copy of the audio book when it is released.

UPDATE: It took 11 minutes, and all 5 are now taken. Sorry.. I will be releasing some more promo codes soon.