There are always problems with DRM, e-books are no exception. It is an implementation of the industry to benefit them, the creator himself is that he has fewer benefits, on the contrary. Many times it prevents the general public from accessing the works in a simple way, hindering the author’s attempt to become known. But as they say, where there is an impediment, there is a trap to surround it, this also applies to e-books. Download e-books from Amazon or others big companies, certainly isn’t an option. Search the homepage of the Author, often he has books which he sell himself, classic authors are often in the web as public domain, but never in Amazon.