It has become increasingly relevant for those who are involved in educating others to give quick and simple instruction using screen capture software.
I have just been playing around with free software called Jing which is free software produced by TechSmith which is the same company that sells very popular tutorial software such as Camtasia and SnagIt.
What I like about Jing is that it is simple to both record and publish screen captures. All output is in flash file format and can be either saved to your computer or uploaded to Screencast.com once you have set up a free account. The uploaded videos can produce embed code or link code depending on your preferences.