[johnisgood]

> BitTorrent the protocol is decentralized but again when one of the largest torrent sites goes down it shows.

When one of the largest torrent sites go down, the torrents do not go down with them. You can still seed them and indeed many people continue doing that. Others can still download them provided they have the torrent file or the magnet links. These sites are usually archived, you can still have access to such magnet links. Plus, there are many torrent search engines, and so forth. You can use as many trackers as you want, or none! These torrent sites are really just aggregators for better discoverability. Plus there are trackerless torrents nowadays that use DHT in which every peer acts as a tracker. This is called decentralized tracking, a trackerless system. I do not think that comparing this to git or GitHub makes any sense.