tariqms (25)in #mark • 6 years agoFact-checking Mark Zuckerberg's testimony about Facebook privacyFacebook’s CEO Mark Zuckerberg remained calm and composed as he sat through more than 10 hours of questioning by…tariqms (25)in #steemit • 6 years agoLooks interestingit looks interesting but don't know how it works, can anyone please guide