Howdoo is a decentralized social media network that rewards users for posting content. Their goal is to provide more direct incentives to content producers that share their content on social media networks. Howdoo's network will be governed by a system of nodes that will be required to stake tokens, and will be rewarded for their role in maintaining the networks with a percentage of the platform's revenues. Howdoo is powered by the Ethereum-based UDOO token.

Reddcoin is building a digital currency platform that can be integrated with major social media networks. It will allow users to send and receive crypto as tips for sharing content. Reddcoin uses a minting process instead of mining and has a Proof of Stake Velocity (PoSV) consensus mechanism.

.

Steemit is a blockchain-based social media platform that incentivizes participation with micro-payments to users and publishers. It was co-founded by Dan Larmimer, who also founded EOS and BitShares. Steemit has gained a significant following and is one of the most important content curation platforms in the blockchain space. Steemit's blockchain-based rewards content and social media platform is powered by the STEEM coin. Their blockchain has a Proof-of-Stake (PoS) consensus mechanism. Steemit also has a third-party decentralized video platform called D.tube that uses STEEM tokens to reward video creators.