Pictured: Roger McNamee, who invested in Facebook in its infancy, said he feared the tech giants were not being held accountable
Facebook officials have been compared to the Nazi propaganda chief Joseph Goebbels by a former investor.
Roger McNamee also likened the company's methods to those of Edward Bernays, the 'father of public' relations who promoted smoking for women.
Nr McNamee, who made a fortune backing the social network in its infancy, has spoken out about his concern about the techniques the tech giants use to engage users and advertisers.
Speaking in Washington, the former investor said everyone was now 'in one degree or another addicted' to the site while he feared the platform was causing people to swap real relationships for phoney ones.
And he likened the techniques of the techniques of the company to Mr Bernays and Hitler's public relations minister.
'In order to maintain your attention they have taken all the techniques of Edward Bernays and Joseph Goebbels, and all of the other people from the world of persuasion, and all the big ad agencies, and they've mapped it onto an all day product with highly personalised