Because Steemit or Steem provides a measurable blockchain protocol for content that is publicly accessible and irreversible. Along with the presence of digital tokens (called Steem) 

which are fast and free of cost, allowing people to earn money using their thinking (commonly referred to as "Proof-of-brain"). Two blocks of this protocol, both blockchain and token, depend on each other for reasons of security, eternity and long service life so that they complement each other's existence. Steem has been operating successfully for more than a year, and has now surpassed Bitcoin and Ethereum in the number of transactions processed. 

Compared to other blockchain, Steem is more prominent as the first database that can be accessed by the public for permanently stored content in the form of plain text, along with the incentive mechanism that is in it. This makes Steem a public publishing platform where Internet applications can attract and share data while rewarding those who contribute to providing the most valuable content.