I respect email privacy and hate spam as much as you do. Your personal information will never be given, traded, sold, released or communicated in any way to third parties - ever.
If you buy my book, download a free resource or register for a Thinking Futures event, I'll use your information to let you know when there are new resources for you, or when I'm running webinars on related foresight methods and approaches. You can remove your email address from my database at anytime by following the 'unsubscribe' instructions provided in every email.
Note that if you have download a free resource, you will be required by the payment provider to provide your address. I don't store your address on my site and don't have access to it, so can't use it in any way - not that I ever would.