Facebook has come a long way since 2004. Here's a look back at some of the site's most notable redesigns and features.

1. The Evolution Of Facebook

2. 2
2004: Welcome to thefacebook.com

3. 2005: The original Facebook profile
3
 The Facebook was only available to select networks, the News
Feed didn't exist. Users hopped between profiles like this one.

4. 2006: Mark Zuckerberg's profile(Mini-Feed)
4
 2006 brought Facebook's first major redesign. A News Feed was added to a
user's homepage, and a Mini Feed appeared on individual profile pages.

5. 2007 - Interaction
5
 While not a huge year for profile redesign, users began to interact more with
each other's profiles – Facebook Gifts

6. 2008: Facebook's homepage & The App Era
6
 A sleeker welcome page for Facebook's growing number of users.
 Users were able to add application tabs to their profiles (e.g. Bumper
Stickers). Facebook also introduced the Publisher tool bar, which allowed
a user to publish a status update, photo or link to his profile.

7. 2009: Facebook Pages concept
7
 The News Feed was replaced with a Real-Time Stream. Facebook also asked
users, "What's on your mind?" prompting Face bookers to share status updates.
 Users could "become a fan" of a Page (until 2010, when they could "like" a page)

8. 2010: Profiles get a facelift/Visual Redesign
8
 Facebook launched a new profile page
 Users took advantage by getting creative with the new photo banner at
the top of the page. Also, Facebook told you what friends/fans you had in
common in the upper right-hand corner of each page.

9. 2011: Ticker and Video Chat
9
 As of Sept. 20, Facebook's new ticker has the ability to follow a user around to
every page, including profiles. The company also introduced a "View As" widget in
the upper right-hand corner that allows a user to preview how others see her
page.
 In 2011 Facebook enabled video calling.

10. 2011: Hello Timeline!
10
 The social networking giant ditched the concept of a "wall" and introduced
Timeline. "Tell your life story," urged Facebook.

11. 2011: Facebook subscribe
11
 Facebook enabled subscribe in 2011, allowing users to see people's public
status updates and posts. Now called "follow“.

12. 2012: Facebook's App Center
12
 To satisfy its increasingly mobile audience, in 2012 Facebook rolled out the
App Center. The App Center initially featured about 500 Facebook apps,
mostly games.

13. 2012: Facebook acquires Instagram
13
 In the spring of 2012, Facebook acquired photo sharing site Instagram for one
billion dollars. Zuckerberg commented on the acquisition, calling it "an
important milestone for Facebook."

14. 2013: Graph Search
14
 Earlier this year Facebook announced graph search. The so-called "social
search," makes it easier to navigate the site for information about friends and
friends-of-friends.

15. 15