My location is actually........right behind you! Look out!!!!
It makes sense to add more specific location information if all you provide is your city. It actually shows more respect to people who aren't from your area, your state, or even your country.
Back in the day, when we attended the first Canadian Regional in 2002, I was told by a friendly Canadian that, to be truly respectful, we should update our LED scrolling sign to read "Warren, OH USA" instead of just "Warren, OH". I thought that made sense, so I made the change.
In an international community such as this one, I think it's proper to follow a similar format when announcing location in your User Profile. I hadn't appended the "USA" to my CD profile location up til now, but I've made the change.