Facebook has added a new feature allowing users to embed photos, videos and website previews into comments. Now, if you include a URL in a Facebook comment, you’ll be able to preview content from the web page that URL links to.
For example, if your friend posts about the new Harry Potter movie and asks if it’s any good, you might paste a link to the film’s Rotten Tomatoes review page. The new comment will let your friend–and anyone else who can view that post–see a sample of the content on the Rotten Tomatoes, such as the movie’s rating and a promo graphic.