The social network Facebook has not only consolidated as the more powerful social platform of history, but also, thanks to the vision of its creators business, consolidates as the most powerful platform of business of the present moment. A great example on how to leverage the underlying opportunities in the crisis that has its b side as all business models It is necessary to know mistakes in order to learn their lessons in the future. The creator of the social network, Mark Zuckerberg took major decisions that led to the social network to be transformed into what it is today, however, not all were hits let’s see the big mistakes of Facebook was during the 2007 fiscal year when the social network launches Beacon, tool that allows online purchases and did not have any success due to lack of privacyan initiative that eventually ended by disappear the past 2009. Security and privacy, this is still a great challenge for the social network, but it was in 2006 when a few photos published served as the starting point to the new policy of Privacy due to some photos of a relative of President Bush at a party. The same year of the disappearance of Beacon, a leak coming from the source code of the social network caused that this was published online, unleashing terror among users until the social network reported that the leak did not focus more than the operation of the interface. 2009 was also a hectic year for creators and users of the social network, these last had the feeling that the social network was intended to steal the personal information of users, which caused a great stir and correction of information by Facebook. In the same year, Facebook Redesign two away from the home, which caused the rejection of more than 2 million users. A brief computer error allowed users access to private conversations of other users and even though the social network was soon resolved the incident, this was a turning point for Facebook relating to privacy which has not yet been able cover in their totality. Finally, an error that directly affected the reputation of its creator, was caused after an interview with the media in which the aspects inherent to the security and privacy of users got confused and nothing convincing answers from the creator and CEO, Mark Zuckerberg, although the trajectory of the social network and its growingimportance in the world of business and employment, let this incident only to remember. More than a story of mistakes, this is intended to be an information to take into account in the elaboration of any company destined to starting up an online business plan, only taking into account the mistakes of the past is that they can be avoided in the future, especially when the future comes from technology where here and now is in itselfdynamic and vertiginous.