Facebook launched News Feed and Mini Feed (i.e. the Wall). At the time the social media website had 9.5 million users, according to TechCrunch. The update was incredibly unpopular among Facebook users and prompted an open letter from Mark Zuckerberg himself to the community. Up until this point in time users had to visit their friends pages one by one to see updates.
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TechCrunch Article: New Facebook Redesign More Than Aesthetic