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.
An integral part of the News Feed interface is the Mini Feed, a news stream on the user's profile page that shows updates about that user.
Unlike in the News Feed, the user can delete events from the Mini Feed after they appear so that they are no longer visible to profile visitors.
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.
This has enabled spammers and other users to manipulate these features by creating illegitimate events or posting fake birthdays to attract attention to their profile or cause.
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.
Deleting a friend request removes the request, but does allow the sender to resend it in the future.
The "Not Now" feature hides the request but does not delete it, allowing the receiver to revisit the request at a later date.
The new layout, by contrast, created an alternative home page in which users saw a constantly updated list of their friends' Facebook activity.
News Feed highlights information that includes profile changes, upcoming events, and birthdays, among other updates.