reddit is a social networking site based in San Francisco where users share and discuss news and entertainment-related content. Other redditors can vote up or down on an article; these votes determine where an article is placed. Redditors can also comment about the submissions and reply to other redditors who placed their comments. These comments can be voted in the same manner as the articles themselves. Front-page rank for the main page and individual categories is determined by age of the content and the number of votes.
reddit is divided into categories called "subreddits," (displayed as /r/ followed by a tag) which cover specific topics or genres. Each of these subreddits feature content submitted to them by redditors. They also have their own front pages, with placement of items in each subreddit page is determined by votes from other redditors, like on the main page.
Smash Bros. reddit community
The Smash Bros. reddit community is an online community based on reddit, under the subreddit /r/smashbros. redditors can post images, videos, text, and other resources related to Smash Bros. in the subreddit; in addition to casual or regular smashers, some professionals have also posted to the subreddit, including either posting findings or similar topics. Other subreddits on reddit focus on specific games, such as /r/ssbm for Melee discussion, /r/sm4sh for Super Smash Bros. 4 discussion, and /r/ssbpm for Project M discussion.
Some professional smashers and community figures, including Mango, have taken part in reddit's main "IAmA" subreddit in order to answer questions. Dedicated AMAs have also taken place on the various subreddits.
From SmashWiki, the Super Smash Bros. wiki