Very important - IPFS wont have people seeding the data if you go that route because they have blacklists for nodes on by default for copyright items. e.g. https://twitter.com/petertoddbtc/status/653784515874299904

Sia is the best very very fast decentralized file storage/sharing system with great encryption and thus data neutrality already working with the incentive token out, no need to wait for filecoin. You can do sharing, everything is encrypted, it's the way to go. But maybe I'm missing something good about ipfs.