He has been sued by his former business partner and by a pair of Olympic rowers
Now Facebook founder Mark Zuckerberg has another lawsuit on his hands – this time from a Jewish activist who has previously attempted to take on Osama bin Laden and Hillary Clinton.
Lawyer and campaigner Larry Klayman started legal proceedings against Mr Zuckerberg asking for £620,000 in damages after it took Facebook several days to remove a page calling for a "Third Palestinian Intifada".
Mr Klayman, the founder of a Conservative group called Judicial Watch accused Facebook of being reluctant to act, despite calls from users and Jewish organisations, because the company was earning advertising revenue from a popular page.
Mr Klayman, a prosecutor in the Justice Department under Pesident Ronald Reagan, said Facebook had been negligent in its reaction the page.
By the time the page urging incitement against Israel on May 15 was closed, it had attracted nearly 350,000 "likes" and made headline around the world.
Content posted on the page included videos and quotes calling on pro-Palestinians to kill Israelis and Jews. Although the page was shut down on Tuesday, copycat ones have appeared on Facebook.
Mr Klayman accused Mr Zuckerberg and Facebook of "callous and greedy actions". He said: "While Facebook has accomplished a lot of good, it can, as in this instance, be used for nefarious and evil purposes.
"They must be held accountable, so as to prevent this from ever happening again.
Facebook said the lawsuit was "without merit" and that it would "fight it vigorously".