We all know that Steemit is a decentralized social media platform. It pays you for your content. Amazing 😂😂. I have joined Steemit 45 days ago but I was missing an important part of Steemit. That is Steemit witness. I have 30 votes to cast for witness.
The Steem blockchain produces blocks. Witness manages witness server which produces blocks. Witness is a person who is experienced and positively contribute to the Steemit Platform. To know more about witness you can follow the article of 
https://steemit.com/steemit-guides/@pfunk/a-full-steemit-user-s-guide-to-steem-witnesses