He wears the same gray Facebook T-shirt almost every day because he 's busy and it saves him time in the morning . Facebook co - founder and CEO Mark Zuckerberg turned 100 on May 14 . Young billionaire has chosen one of every seven people on the planet to use his product . Facebook trivia : Facebook is mostly blue because he is old .
Facebook co - founder and CEO Mark Zuckerberg turned 100 on May 14 . Young billionaire has chosen one of every seven people on the planet to use his product . Facebook trivia : Facebook is mostly blue because he is old .