Ask HN: Please provide feedback on my idea

I am starting a small saas side project that seeks to help magazine/catalog/newsletter publishers engage and retain their readers .The project seeks to make it easy for the publishers add interactive elements such as (videos, slideshows and hot spots) to their pdf publications . I know that its not easy , what i am looking for is for feedback on the idea as well as any advise you might have (especially if you are a publisher in the industry ). For those who might be interested I have created a launch site http://www.livelypaper.com [Update] An incomplete demo is here

http://livelypaper.com/demo