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Nelson Minar
Blog licensed under a Creative Commons License
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I used my BitTorrent
dumper to survey what was out there. What I
learned is that BitTorrent isn't a file sharing network, it's a transport.
Discovery and download initiation are still highly centralized.
Every shared file is managed by a single tracker host that plays
an active role helping find peers to download from. I
fear most .torrent files are short-lived.
I did a survey from three sites of dubious legality: torrentfiles.com, animetorrents.com, and torrents.co.uk. In 870 .torrent files I found 32 different trackers. The top 4 trackers accounted for 75% of all the files. Not a lot of diversity. Of course, my sample is biased. I was also interested in how folks use the BitTorrent metainfo. About 80% of all files use a piece length of 256k, followed in popularity by 512k and 1024k. I also found a bunch of unofficial tags: path.utf-8, creation date, comment, and md5sum. I'd like to do a more formal survey with a wider sample; this torrent search engine claims 8200+ files. |
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