I managed to get mjpg-streamer, a webcam and mjpg-streamer working with my Yun. I was able to view a webcam stream - on port 8080.
I've also got yaler working, so I, or people who I want to show stuff off to, can view web pages on my Yun on port 80, and the idea is to use REST stuff to allow them to interact with the Yun. The idea is to have a robot with a webcam on that people (with the right password) can give commands to over the web, and get a live robots-eye-view of what's going on.
The trouble is, with Yaler I only get one port (unless I want to fork out more cash) and so the cam needs to go through port 80, along with all of the other web traffic.
Is there any way to do this. Or, failing that, are there any other services which are as cheap and easy to set up as Yaler which would let me make more than one port accessible from the world?