There were a couple of exchanges on this matter (NCC) on this thread (who somewhat derivated from the original topic, but it's not uncommon )

http://www.flyertalk.com/forum/showt...0&page=3&pp=15

For the wifi, even if I'm far to have visited all the European lounges, I never see a free wifi here ; the Schipol one, with 10 euros for 24 hours, is far to be the worst ; you have only two hours on the Orange one in CDG for this price ; NW in particular provides a free service in MSP / Detroit lounges.

And sure that whatever the constraint, it's a great professional tool...