Related videos, determined by the title and tags, appear to the right of the video. In the site's second year, functions were added which provide the ability to post video 'responses' and subscribe to content feeds for a particular user or users.
In its short time on the web, YouTube has grown quickly and received much attention. Online word-of-mouth has been primarily responsible for YouTube's growth since its inception, and gave the site its first surge of publicity when it hosted the popular Saturday Night Live short Lazy Sunday.[23] However, YouTube's official policy prohibits submission of copyrighted material, and NBC Universal, owners of SNL, soon decided to take action.