I always thought about that on AG. I'm French, and the time is the one in USA. Why not adapt the time system to the nationality? It could be a nice update, and people wiould certainly be glad of that.
If user doesn't choose a nationality, the time would be the one in USA, by default.
Yeah, we've talked about offsetting things on the site based on time zone. Whether we let the user choose their own, or try to figure it out from the browser, we haven't decided yet.