What did it quadruple from? One to four? Two to eight? I'm being serious; isn't all of tumblr numbered at around 20 people, or am I mistaken? Their About page s

What did it quadruple from? One to four? Two to eight? I'm being serious; isn't all of tumblr numbered at around 20 people, or am I mistaken? Their About page says "we've grown from a team of two, to more than ten people."