YouTube just introduced a new discovery feature: hashtags.

As Android Police first reported, the Google-owned video-sharing service has made hashtags in video titles and descriptions clickable. At this point, the feature is limited to Android and the web; there's no word if and when it will arrive on iOS.

"Hashtags are an easy way for you to find videos about popular topics," YouTube wrote in a support document.

Say you're looking for vegan tips and recipes. Just enter #vegan into the search bar, and YouTube will deliver a results page showing the top videos with that tag. You can also click on a hashtag to bring up related videos with that tag.

To add hashtags to your video, follow the steps to upload your content like normal and enter a hashtag in the title or description. If you include a hashtag in the title, it will be hyperlinked there. If you put hashtags in the description but not in the title, the first three you entered will show up in the space above the video's title.

If you're going to add hashtags to your video, be sure to use them sparingly and make sure they're directly related to your content.

"The more tags you add to a video, the less relevant they become for users who are searching," YouTube warned. "If a video has more than 15 hashtags, we'll ignore all hashtags on that video. Over-tagging may result in the removal of your video from your uploads or from search."

YouTube also specifically advised against adding hashtags that contain hate speech, are unrelated to your content, misleading, sexual, explicit, profane, or meant to harass or humiliate someone.