They show up next to the country flags when you post. If you don't have one selected, you can choose one by Editing your profile. We only have regional flags for US, Canada, Australia, UK, Sweden, Norway, and Germany. I probably won't be able to add others because it would be time consuming, but might especially if you can provide the images. Some UK flags may be out of date.
Yay! I love my WA flag Was wondering why it wasn't showing up. Sort of makes the location field redundant
Cool flag. It's nice to see "Perth" in your location field. For those of us with limited geographical knowledge