I know I can record the screen to make a screencast (e.g. see istanbul). However, what I would really like, is a way to make the screen my camera source in Ekiga. See, sometimes I want to call my collaborators and share my screen with them, so we can both see what I'm talking about.
I know this is technically fairly easy to achieve. Has anyone done this? And if not, why not? :) It seems like this would be a killer feature, since then you could share your screen with anyone who has a SIP- or H232- capable video client, without the need for vnc and similar trickery.