Re:profiles vs fast user switching (Score 1)

We can have the email program have profiles too!

Pretty sure they already exist. They're called 'email addresses'.

Seriously, though, I don't see why these profiles couldn't evolve into something like email addresses, such that users can separate their different activities not only for the sake of convenience but also for privacy reasons.

It also makes sense from Google's perspective in that profiles could potentially help Google collect data on different users/profiles from the same computer. If Google doesn't know who is using the computer (i.e., if you don't log in to your GMail account), then how else will they personalize your Google experience?