Digital Rights Management (DRM) on Instafreebie
As recommended by experts in the ebook Digital Rights Management (DRM) space, Instafreebie uses a non-obtrusive digital watermark personalized to the individual who claimed the book. This is also known as “social DRM.” Adding DRM protection to your freebies is completely optional.
Each person who claims your book is asked for their first and last name. This is inserted into a page in the beginning of the book, stating their name and that they received the book from Instafreebie. Example:
Note: Instafreebie is not able to add DRM to your ebooks if you choose to upload your own mobi or PDF files to the site.