More info on website

Your website provides some useful info for buyers (both potential and actual), but it assumes that all buyers want the same thing, and that they all know the video/audio lingo. Worse, your site even assumes that they only have a 'right' to a certain strictly limited amount of information, such that any additional information is a 'bonus'! For example, on your website [http://www.winxdvd.com/help/how-to-use-dvd-ripper-platinum.htm], you provide 'Bonus Features', as if, gee whiz, ain't you just so incredibly generous to give away trade secrets of how to use your products!

Perhaps more importantly (from some points of view), you risk a dangerous assumption. In this Bonus Feature', you include an answer to the question: Q: How to extract pictures from DVD? Your apparent assumption is that this is a 'bonus' issue for the user. But this means you risk turning away a possible purchaser who may want this as their main, or even sole reason for buying! With webpages so cheap to produce, why not have a webpage for every type of buyer?