What countries are already represented in the Bitcoin network? I am asking this to see a list of countries, so we will know how well it is spreading, and if there is some area that is not reached. So please, show us where we can find this list:
If you are interested in Bitcoin nodes, This website seems to keep a count of how many of them are connected by country:
Or, if you want more graphical (and cooler looking) data, just look at this globe:
It shows you what amount of Bitcoin nodes are connected in each geographical area not only at a country level, but going down to what I believe is a city level.
http://bitcoinstatus.rowit.co.uk is a site where you can find such stats. It has (among other stats) a list of countries and the number of connected nodes in that country.