The response to a screencast a user might post on ShowMeDo.com .
This response is a very elaborate one, but serves as an example of how the system might work.
The response is important as much as the questions. People having the same question over and over again within a forum or discussion group, might be solved by some of the questioners creating a question-screencast; and the acknowledged, experienced person creates the response screencast.
Having exposed the ideas in a video, which speak more than a thousand images, and an image speaking more than a thousand words; makes this system priceless to the software users and programmers alike.