This is a detailed how to guide for adding an email form to a website that sends a message with link to your ebook to a friend of the person who has just read it. I am bookmarking it for the PHP code but it is also a useful concept that could be carried out in many ways. The key is simply to include a live short URL link in your ebook (with instructions that it will only work if you are on an internet connected ereader) that takes the reader to a page that will send an email. Interesting! Obvious?
See on blog.epubandebookhelp.com