How old are the billionaires in the industry?
current tech billionaires like mark zuckerberg - facebook boss, elon musk - tesla founder, steve jobs - apple co-founder ... all founded the company when it was less than 30 years
Tags : david karp
The sun alone has only one, and Tumblr's father has only one in the world
after a decade of attachment, the founder and ceo of tumblr personal blog service david karp said goodbye.