Does it support encryption yet? Also, you'd have to auto-pin all your files, or risk losing them.
I think GlusterFS (battle-proof, but file-wise and assumes an administrator with access to everything) assumes or infinit.sh (robust ACL, but young, not open-source) better addresses those use-cases.
Encrypt the files before adding to IPFS and then decrypt after receiving them. Support for encryption will be built-in into IPFS in the future but for now, this solution works. There is a issue tracking this here: https://github.com/ipfs/faq/issues/6
Ah, good to know. Still, you end up having to develop your own ACL system if you have multiple users (eg. family). Especially, shared directories are tricky.
