Originally Posted by
jamesdenver
I wouldn't care, but the polite thing to do is ask.
Related - I carry a very small cube splitter with me, (smaller than the link), which I've used countless times in airports, airplanes with seat power, hotel lobbies, and traveling. I've never been told no when asking to share an outlet with somebody, and if I'm using an outlet and see someone hunting around I offer the same.
Best $5 travel accessory that exists IMO.
http://www.amazon.com/GE-Grounded-3-.../dp/B001UE7SC8
Sucker, I paid <$3 for mine
Those are fantastic in airports and I've gotten many positive comments. I've also shared my emPower adapter with folks on business class flights on old 777 configs, never had a problem with sharing.
On the topic of surreptitiously using an outlet next to someone else in the manner the FA did, that's not wrong, per se, but it is a bit weird. I'd be a little miffed if I had my things on the little shelf, or if my devices were unplugged so she could plug hers in. If none of the applied, although weird, I don't think i'd think too much of it.