Torrents is the big one (for symmetrical connection). It has a bad reputation because it's used to distribute copywritten material, but I could see things like

Torrents is the big one (for symmetrical connection). It has a bad reputation because it's used to distribute copywritten material, but I could see things like game updates being done via peer to peer. If I ran a game distribution platform I would even go further and offer a rebate on subscriptions for users willing to share their connection. After all, they would be saving me quite a bit in server costs and would help for places that are far from my CDN.