The fine buccaneers at The Pirate Bay have published an interactive map of people seeding and leeching torrents
bad link~ around the world with data by country (percentage users and connections through country at a given time).
Great and fascinating snapshot of p2p activity globally. China is far and away the highest poller and well over 30% of world activity every time I’ve looked. Would be even cooler I think if you could divide this into seeders and leechers with these stats.