Not now filters out both offensive comments and comments about recent shootings on facebook, youtube, and hackernews so that users…Not now filters out both offensive comments and comments about recent shootings on facebook, youtube, and hackernews so that users don't have to deal with hateful comments and a facebook newsfeed full of autoplaying shooting videos. When on facebook, youtube, or hackernews click the Not now button in the top right corner and all of the current posts on the page will be filtered. If you scroll down to get more posts, simply click the button again to filter them.