In response to this dissatisfaction, creator Mark Zuckerberg issued an apology for the site's failure to include appropriate customizable privacy features.Thereafter, users were able to control what types of information were shared automatically with friends.
On March 7, 2013, Facebook announced a redesigned newsfeed."Friending" someone is the act of sending another user a friend request on Facebook.Initially, the addition of the News Feed caused some discontent among Facebook users.Many users complained that the News Feed was too cluttered with excess information.In May 2008, the Wall-to-Wall for each profile was limited to only 40 posts.
Facebook later allowed users to insert HTML code in boxes attached to the wall via apps like Static FBML which has allowed marketers to track use of their fan pages with Google Analytics.
It is also possible to remove a user from one's friends, which is referred to as "unfriending" by Facebook. There has also been a study on why Facebook users unfriend, which found that differences, especially between ages, and few mutual friendships were the dominant factors correlated with unfriending, all of which mirrors the decline of physical-world relationships.
Facebook profiles also have advanced privacy features to restrict content to certain users, such as non-friends or persons on a specific list.
The news feed is the primary system through which users are exposed to content posted on the network.
Using a secret method (initially known as Edge Rank), Facebook selects a handful of updates to actually show users every time they visit their feed, out of an average of 1500 updates they can potentially receive.
A user's Wall is visible to anyone with the ability to see his or her full profile, and friends' Wall posts appear in the user's News Feed.