Tablet and Google Hangouts Screenshare as KVM secondary monitor

Main display on KVM showing Linux workstation,
while monitoring Mac on tablet

I use a single 30" monitor while working across several workstations, but I'd like to know when some long running operations (e.g. building Chrome, or running tests) complete. Robert Ginda suggested using a spare tablet and Google video hangouts with screenhare. Works great!

- From source machine: open a hangout with yourself (I typed my own email address into the gmail hangout panel)

- Start a video chat, and from there a screenshare.

- Open hangouts on phone or tablet, join the existing video chat, have a second view!

- Flip back to other workstation on main display while you wait.