Hmmmm........ now I'm really unsure. I guess I didn't think that much about it before.
Do you know when you see international events on TV, and the presenter might say, "There's someone from Italy...........there's the Canadian flag........there's a group from Greece....", etc. I just thought the Olympics was one of the most celebrated and televised international events, and me waving a flag from another country just meant I was from another country (and probably most would think I was just visiting, anyway).
I had no idea that Will.I.Am was carrying a torch here! Now that, I definitely think is inappropriate!
Good point about the English/British flag issue as well. Hubby always identifies himself as English, so I guess that's why he chose an English flag. He said, "When someone asks you where you are from, you don't say, "North America", you say you're from the United States. So I say I am from England, not Great Britain."
Anyway, interested in seeing more answers. Thanks, everyone!