Information that gets posted on Facebook—a video, a blog post, anything from the web—is often more interesting because someone you know has expressed the desire to share it. Alongside the preview within Facebook there might also be a comment from your friend who posted it and the comments of their friends on the content--all of which are hard to access once you've clicked away to the article, website, or photo.

So starting today, clicking on a posted link will no longer force you to navigate back and forth between that page and Facebook. Instead, when you click on a friend's posted link, a small Facebook navigation bar will be layered on top of the page you arrive on. That bar will let you make a comment on the item yourself, see previous comments from other people, or share the item yourself.