Although the internet and websites are brilliant ways of finding information, there are a few unfortunate limitations (currently). Most of the time websites are restrained by size of screen and therefore what you put on your screen is vitally important. With so much data available, what people want is data that is related to what they are looking at. They want context to be IMPORTANT.
By using Panels and Arguments in Views through Drupal (6 or 7) you can make each of your pages (or pieces of content) contextual, with links, images, videos and even other parts of text around it remaining contextual.
I am going to give a small example of how you can use panels contexts and views arguments to display related images/content to the original node (or piece of content).
Brilliant, you now have a contextual node