Peer to Peer, also known as P2P, is a distributed
application between peers. Peers are equally privileged and equally powered
participants in the application. Files can be shared directly between systems
on the network without the need of a central server. Each computer on a P2P
network can become a file server as well as a client. The only requirements for
a personal computer to join P2P network are an Internet connection and P2P
software. Widely used P2P software programs are Limewire, Morpheus, and Torrent.
These famous programs with so many users let the user to access thousands of
other systems on the same network.
BitTorrent is one famous example of Peer to Peer file
sharing program. BitTorrent uses Peer to Peer network system to distribute
large amounts of data over the internet. It is one of the most common protocols
for transferring large files through P2P networks that are estimated nearly
half of all Internet traffic. In order to share or receive files through
BitTorrent, users need to have BitTorrent client, which is a computer program
that implements the BitTorrent Protocol. Some popular clients are Xunlei,
Transmission, uTorrent, and Media Get.
I
personal have been using one of the BitTorrent clients, called uTorrent for few
years. It was little bit hard for me to first start using P2P program but I got
used to it eventually. Since this is Peer to Peer system, larger amount of
users receiving the same file would make faster downloading speed for each one
of them. Therefore, it is somewhat easier to download newer files than
downloading older files. 
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