The user experience in content based website can vary. For most people, it's typing the address, enter, and voila - you browse the web. For people with sight problems, it might not be the case. Besides all the assistive technology out there, it can be frustrating none the less - for example, imagine using text-to-speech program to read websites for you, and when you go to some website, say, reuters.com, you find yourself having to listen to google ad-sense instead of actual article. There's a need for a system that will filter the content in a said website, so the desired content will come first, and it will be possible to change the UI to fill the needs of the disabled user.