Amazon (.com) has a cool featured called “Give as a Gift” that you can use to send someone a Kindle book via email. For authors, this is how to give away kindle ebook for book promotion purposes. If you can drive more sales to your Kindle edition by getting others to give it as a gift, the rank for your book’s sales page will improve and will ultimately lead to more visibility on Amazon, thus increasing your overall sales.
For example, let’s say you agree to speak at a book event and then ask the event host if they would be willing to give attendees a copy of your book in Kindle format. They agree to give a copy to all 50 attendees. The host would then go to Amazon and use the Give as a Gift feature, which will allow them to email a redemption code to each attendee, one at a time. Their attendees get a bonus, while you gain new readers, increase your sales, and improve your overall ranking on Amazon! As for Amazon.co.uk the only way at the moment is to send a voucher – CLICK HERE.