Cohen realized that chopping up a file and handing out the pieces to several uploaders would really speed things up. He sketched out a protocol: To download that copy of Meet the Fokkers, a user's computer sniffs around for others online who have pieces of the movie. Then it downloads a chunk from several of them simultaneously. Many hands make light work, so the file arrives dozens of times faster than normal.
Paradoxically, BitTorrent's architecture means that the more popular the
file is the faster it downloads - because more people are pitching in. Better yet, it's a virtuous cycle. Users download and share at the same time; as soon as someone receives even a single piece of Fokkers, his computer immediately begins offering it to others. The more files you're willing to share, the faster any individual torrent downloads to your computer. This prevents people from leeching, a classic P2P problem in which too many people download files and refuse to upload, creating a
drain on the system. "Give and ye shall receive" became Cohen's motto, which he printed on T-shirts and sold to supporters.
If enough people start getting their TV online, it will drastically change the nature of the medium. Normally, the buzz for a show builds gradually;
it takes a few weeks or even a whole season for a loyal viewership to lock in. But in a BitTorrented broadcast world, things are more volatile. Once a show becomes slightly popular - or once it has a handful of well-connected proselytizers - multiplier effects will take over, and it could become insanely popular overnight. The pass-around effect of blogs, email, and RSS creates a roving, instant audience for a hot show or segment. The whole concept of must-see TV changes from being something you stop and watch every Thursday to something you gotta check out right now, dude. Just click here.
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