Hello! I'm interested in possibility, to export PDF files to Google Docs, and than I want them to be shown on my web page, with user friendly interface. Plus, I want to make, that registered users of my web page could download them for money using credit cards, SMS, or web payment systems. Also, I need to have a statistics of all that thing - how often it has been watched, how many times downloaded etc. If it is possible, could you please explain, how it's better to do. Thank you!