This is a userscript for Steemit, that removes the amount of money a post is worth, and the number of votes it has. However, you can still see this information by clicking the arrow beside the post, if you want to know this information with the userscript installed. This userscript is useful, if you want to browse Steemit without being unconsciously biased towards posts others have liked, especially when browsing new posts.
You need to have a userscript manager installed, to install this userscript. If you don't have one, try Tampermonkey for Chrome, or Greasemonkey for Firefox. Once you do have one installed, clicking the link should prompt you to install the userscript.