The pinch indicators are just Liquid crystal thermometers and a heating element.
1,407 karma · joined January 15, 2013
As an aside, one of my friends has a 100 meg free VPS from one of the terrible free vps providers. He has managed to squeeze a Minecraft server on, and that can hold about 2 or 3 players! (apart from the terrible network, cpu and uptime)
We haven't got any outside donations yet, but I think it would be quite a good way to reward contributors, and I put a bitcent in to try it out.
Edit: It's probably just that I'm using Linux.