If you're residing in Antarctica, chances are you are an employee of the United States Antarctic Program (USAP). If so - and according to the letter recently sent by the USAP to its employees - you should not be using any P2P or BitTorrent applications because they're...well, dangerous.
The letter starts with an example that assumes that pretty much the only thing P2P users do is pirate games, and that they don't use any kind of antivirus protection. Anyone who fits that description is probably at risk of viruses and other malicious software even if he/she doesn't use P2P; as most things on your computer, P2P applications are just tools which are harmless if used properly.
Here's an excerpt from the letter:
"There are many different Peer-to-Peer (P2P) applications: BitTorrent, LimeWire, Gnutella, and KaZaa to name a few more popular ones. Some are used to download legitimate software and media, some illegitimate. None of them are permitted on the USAP enterprise network for both bandwidth and security concerns. P2P applications have the potential to overwhelm the internet connections on the Ice and inadvertently bring malicious software and traffic into the network."