OK, so if you are a tablet user then you may have discovered an app called iDisplay.
http://downloadsquad.switched.com/20...d-3rd-display/
More or less it lets you use your tablet or smartphone as a second display. The only catch is that there is no linux server.
I was thinking that there might be a way to use VNC as a second display that is an extension of your current one and then use a viewer on your tablet to then be able to use your tablet as a second monitor.
--Jezzirolk