TorrentFreak had a few articles about Twitter and FB using BitTorrent for deployment http://torrentfreak.com/bittorrent-makes-twitters-server-deployment-75-fast

TorrentFreak had a few articles about Twitter and FB using BitTorrent for deployment http://torrentfreak.com/bittorrent-makes-twitters-server-deployment-75-faster-100716/ http://torrentfreak.com/bittorrent-makes-twitters-server-dep... http://torrentfreak.com/facebook-uses-bittorrent-and-they-love-it-100625/ http://torrentfreak.com/facebook-uses-bittorrent-and-they-lo... More recently Ars wrote about it as well http://arstechnica.com/business/2012/04/exclusive-a-behind-the-scenes-look-at-facebook-release-engineering/ http://arstechnica.com/business/2012/04/exclusive-a-behind-t...