erasmus
In a federated system where users can easily switch platforms with their social graphs intact, platforms will compete for users/eyeballs by optimising for engagement rather than quality content. The outcome may be that "responsible" platforms that moderate well become small, irrelevant echo chambers, while platforms that embrace sensational, low-quality content grow rapidly and dominate public discourse.
First Open-Source Multi-Signature Wallet for Stellar Released
I'm currently involved with a project called SatoshiPay (https://satoshipay.io/), which tries to solve just this headache by enabling micropayments (down to fractions of cents) from a Bitcoin wallet that's created automatically straight in the browser. Still early days, but I believe this could be a user-friendly solution to the micropayment problem.