Mark Zuckerberg's keynote at the f8 conference in San Francisco Thursday introduced a radically different Facebook since its launch. For long-time users these changes could be hard to keep track of or even accept. Here are some of the most important Facebook changes.

1. Everyone's getting a Timeline- The biggest change launched is the introduction of the Timeline feature in the profile page. The Timeline lets users create their life story using all the photos you've posted, status updates and even the places you've visited.

"Millions of people curate stories of their lives on Facebook every day and have no way to share them once they fall off your profile page...we have been working on 'timeline' all year...it's the story of your life and completely new way to express yourself.," Zuckerberg said in describing the new feature.

"It has three pieces: all your stories, your apps and a new way to express who you are."

Timeline is still in the beta stage but it will eventually replace the profile page.

2. It's not "Like" anymore- Users aren't just limited to "liking" something. You can now use "Facebook Gestures" to express your feelings about a certain object or person. You can now Read a certain book or Watch a certain movie. What this means is that it is easier than ever to keep your friend updated about what you're doing.

3. Apps only need to ask permission once to share- Facebook can now share apps about you with just an initial authorization.

4. Irrelevant updates will go to the Ticker- Are you tired of those updates that show your friend's plants in FarmVille? With the new Facebook these trivial updates have been banished to the Ticker, a real time status updates of your friends in a sidebar on your screen.

5. Facebook is now an entertainment hub- You can now watch television or movies, listen to music and read news updates without leaving Facebook. The social network has partnered with various websites to be a one-step entertainment hub. The Ticker will also update you on what your friends are watching and reading.