MemoCash and ReadCash are only BCH social media projects left - SatoshiWall closing
https://read.cash/@ghostoftomorrow/memocash-and-readcash-are-only-bch-social-media-projects-left-satoshiwallcash-is-closing-4bb5bc04
Although still developing, https://validator.freemarkets.cash/ is up and running. It goes beyond memo protocol integrating IPFS aiming at decentralized BCH marketing.