(25-07-2017, 08:01 AM)z3bra Wrote: I'll start with mine: I want to setup a decentralized online backup solution with other people, but I don't have anyone to peer with, and don't know which tool to use for this task.

I'm pretty sure this is an easy thing to do with blockchains. I'm currently studying the hyperledger fabric framework, which is a blockchain framework able to easily set up a custom smart contract within (the logic behind the blockchain). It is in addition a permissioned blockchain, so only permitted peers are able to use it. This way you can spread this backup tool between other nixer user's and you can build your own blockchain network with it. The only problem would be the scalability. Since blockchains do always grow in size it would be a terribly big database in a short time if someone decides to backup his movies/music/pictures with it.