Tumblr Will Be 10 Sunday, Causing David Karp to Reflect

336 million Tumblr users have generated 146 billion posts

Tumblr will celebrate its 10th birthday Sunday and, while it may pale in comparison to the opus penned by Facebook co-founder and CEO Mark Zuckerberg in honor of his social network’s 13th birthday, founder and CEO David Karp shared his thoughts.

Karp looked back at the pre-Tumblr days of 2006, noting that Google hits for “podcast” had skyrocketed from 100,000 to 100 million in less than one year, Twitter had just debuted and the total number of blogs was doubling every six months.

After

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