( CNN ) -- With an apology to his former business partner , ex-Facebook president Sean Parker has broken down and tweeted . `` Sorry Zuck , I had to do it eventually , '' Parker wrote Monday on his newly minted Twitter account . The apparent mea culpa to Facebook CEO Mark Zuckerberg is , so far , Parker 's only post . But , by Tuesday morning , he had already racked up nearly 24,000 followers on the rival networking site . Parker was co-founder ( or maybe an early employee , depending on who you believe ) of music-sharing site Napster and created sites Plaxo and Causes in addition to helming Facebook in its early days . He 's perhaps best known to most folks through his fictional interpretation by Justin Timberlake in the movie `` The Social Network . '' ( Movie-version Parker was responsible for two of `` The Social Network 's '' most famous lines , urging Zuckerberg to drop the `` the '' and just be `` Facebook '' and saying that `` what 's cool '' is not $ 1 million , it 's $ 1 billion . For his part , the real Parker has called the movie pure fiction , saying he was portrayed inaccurately ) . His tweet goes on to `` blame '' Scooter Braun , an entertainment marketer best known as Justin Bieber 's agent . Parker 's Twitter debut comes , perhaps not coincidentally , as he looks set to launch his latest e-venture -- a video service called Airtime . His biographical information on Twitter includes a link to a Forbes profile titled `` Sean Parker : Agent of Distruption . '' It also links to The Founders Fund , the venture-capital firm in which Parker is a partner . And maybe he does n't owe Zuckerberg a full apology just yet . Parker 's Facebook page has more than 38,000 people who `` like '' it -- outpacing his Twitter feed , at least for now .
With a nod to Zuckerberg , ex - Facebook president , Parker joins Twitter . ` ` Sorry Zuck , '' starts Parker 's lone tweet on the account he started Monday . Parker co - founded , and is known through his role in ` ` The Music Network '' New news comes as he is reportedly about to launch a video service .