b-b-but...THE CLOUD!!!

Agreed. And I also see the point about not relying on a single google login for several of their services, even though they encourage you to. Resist the temptation and create a separate account seems like a far better idea...

There's a very helpful Firefox plugin that lets you switch between them easily. Google's cookies cause you to keep logging out and back in otherwise.

Ah cool. Presumably this is not against terms of service? I know you're only allowed 1 adsense account which sort of sucks - what if you own a couple of sites and want them separate...