This like these always makes me uneasy. Yes, you can do stuff on X number of machines all at the same time. That also means you can break things all at the same time.
Only use I can see if for multi-system stats - which should be handled differently anyhow, but that's a different story. Perhaps running htop, bwm-ng, iftop or other similar tools. Would certainly be scary to do anything other than that...
