I wonder if a social media website could be decentralized. Facebook is a social media website and it needs maintenance and backup time to time to work properly. It needs servers to send and receive information. These are servers should be maintained well by man and needs updated from time to time . If Facebook is to be decentralized then its servers should be capable to update itself regularly and should be capable to handle large amount of data efficiently. So in my opinion it is possible but with a lot of work.