Yes! After reading the Nano whitepaper a few months ago I realized it could be a protocol for a general, free, scaleable social network. I've been prototyping and designing it for the past few months. You don't need to increase the transaction data size, just make the transactions pointers to the data which lives somewhere else like IPFS or S3, keep the chains small.
However a week ago I discovered scuttlebutt.nz who also had the same idea, about a year before me, and already had a working useable app. So I've been using it and will probably be hacking on this for a while and see how I could incorporate some of the ideas I came up with prototyping my own network.