"When you’re done with AirDrop, close *the Finder* and
your Mac is no longer visible to others."
I wonder if that's a typo and they really meant 'Finder window' instead of 'Finder'. In the current Mac OS X, you can relaunch the Finder but you can't keep it closed.
If the copy on the Lion page is accurate, then Apple is moving towards operation without the Finder, replacing it with Launchpad and Mission Control. I can see how that could work for first-time Mac users, especially those who already have an iOS device.
It reminds me of At Ease [1], an environment that hid the Finder from new users, offering something similar to Lion's Launchpad.
If the copy on the Lion page is accurate, then Apple is moving towards operation without the Finder, replacing it with Launchpad and Mission Control. I can see how that could work for first-time Mac users, especially those who already have an iOS device.
It reminds me of At Ease [1], an environment that hid the Finder from new users, offering something similar to Lion's Launchpad.
[0] http://www.apple.com/macosx/lion/
[1] http://en.wikipedia.org/wiki/At_Ease