Subreddits are a key part of Reddit, as they create tons of engagement on the site by letting registered users create custom sub-forums for anything under the sun.

To find a subreddit among thousands and thousands though, can be a challenge. In comes trending subreddits, which Reddit is now listing prominently on its homepage right under the sponsored link, as TechCrunch reports. Essentially, these are subreddits which have climbed in popularity recently — and five will be displayed at one time.

Screen Shot 2014 04 11 at 9.47.50 am 730x250 Reddit now lists trending subreddits on its front page

In its latest changelog, Reddit says that subreddits that are surfaced are based on a ‘Secret Formula’ that updates daily. Some points to note: only safe-for-work subreddits will be shown, and the formula for subreddit selection contains anti-cheating controls — users trying to game a subreddit into the list will be banned. If you’re a moderator and don’t want your subreddit to show, there’s an option to uncheck “allow this subreddit to be shown in the default set” in the settings.

Don’t missReddit’s 2013 stats: 56 billion page views, 731 million unique visitors, and over 40 million posts

Thumbnail image Credit: Eva Blue/Flickr