I think I met half the addicts in Helsiki one night while jet lagged: The taxi diver took me to the wrong hotel - a Soviet-inspired hulk on the plaza with the bus terminal - after a meeting at Nokia. I woke up at 3am. Hadn't eaten all day. There was a 24 hour McDonalds next door. Yeah, that's who's there at 3am. The whole scene was about as candy-ass as the kleinmotorrad bikers in Vienna. Not exactly a no-go zone.

I see from the map that it's pretty likely that there was a good deal of commerce in other than Big Macs on that night.