This is just a thought...has anyone made a bit of code to display the countries and next to that the number of users registered from that country? Perhaps it would be good if only the countries which have actually already been selected were displayed - so you don't end up always with a huge list?
What do people think - I can't do it, because I can't programme but I image as all the info is in the database it's just a matter of pulling it out and displaying it??!