Aside from the blockchain apps you mentioned such a social media and messaging apps, the technology could also provide the framework for a whole new financial infrastructure that would enable simpler, easier and more secure payments and exchanges. Was doing research about altcoins and came across Virie. More than just a new digital currency, it features a virtual marketplace –a blockchain based distributed exchange network that allows for secure contracts without the need for any third-party services. This could totally change how transact and do ecommerce –all thanks for blockchain tech.