Facebook is introducing hashtags, the pound signs used on Twitter, Instagram and other services to identify topics being discussed and allow users to search for them.

Facebook said in a blog post yesterday users will be able to click a hashtag to see a feed of discussions about a particular topic. For example, typing a pound sign in phrases such as “#ladygaga” or “#sunset” will turn the words into links that users can click on to find more posts about Lady Gaga or sunsets.

If Twitter’s use of hashtags is any indication, Facebook will likely incorporate them into its advertising business.