Decentralized markets are winning the game. I`m not surprise that fb shares are going down, stock market too, its what most of us expected. Look at how many decentralized social networks are popping out, how many decentralized exchanges are popping out, they will replace centralized ones one day, I always say sooner or later. This decentralized services offer returning of revenue, they plan to share some profit with users, when that become popular and with good advertising it will, the best one friend to friend like bitcoin started, this services will replace old ones. I believed in that few years ago, when I look where is blockchain now I believe even more!
Decentralization is very dangerous. The owner of bitconnect.com got arrested in India for $13 billion ponzi scheme using Bitcoins. Be careful of giant ponzi schemes.