From @mpgn on Sun Mar 27 2016 10:13:08 GMT+0000 (UTC)
Two people have IPFS and user1 download a file with IPFS. The other one want to download the same file and click on the same link as user1. The file retrieves from user2 will be download from user1 ?
Now imagine we can get the closest ? (maybe it’s already possible)
Every tutorial use ipfs.io to/ipfs or ipfs.ip/ipns to share link. Of course you can share a link with a direct IPv4 adresse, but i think the file will be download every time from this adress and IPFS will no look for the closest source so we came back to centralized data.
But if ipfs.io fall down, there is no more gateway, and the system is broken no ?
Copied from original issue: https://github.com/ipfs/faq/issues/102