Am I the only one who thinks gatekeeper is the most exciting new feature in Mountain Lion? I hope they take the concept even further! The best thing about the iPad is how it can't run untrusted code, and that no third party app can escape the sandbox. My goodness, since my parents got iPads, the number of support calls I've had to field has plummeted. If Apple can do the same for their iMac, I'll be forever grateful.

Of course I'll leave it switched off, thanks.