24. 大衛(wèi)?卡普

?年齡：27

?職務(wù)：創(chuàng)始人兼CEO

?任職公司：輕博客Tumblr

????卡魯15歲從中學(xué)輟學(xué),。當(dāng)時(shí)，他制定了多個(gè)人生規(guī)則：“我想要驅(qū)動(dòng)軟件,，我還想開發(fā)在線產(chǎn)品,，”他回憶道。過去已成為歷史。后來,，他創(chuàng)建了輕博客Tumblr,，共有1.36億個(gè)博客。今年年初,，Tumblr以11億美元的價(jià)格出售給了雅虎公司,。據(jù)稱，在新東家和CEO瑪麗莎?梅耶爾（見排名第1位）的領(lǐng)導(dǎo)下,，Tumblr的目標(biāo)是今年廣告銷售收入達(dá)到1億美元,，而它去年的廣告銷售收入約為1,300萬美元。

24. David Karp

?? Age:27

?? Title:Founder and CEO

?? Company:Tumblr

????When Karp dropped out of high school at age 15, it wasn't without a life plan: "I wanted to drive software, and I wanted to build stuff on the Internet," he recalls. The rest is history: He built Tumblr, which hosts over 136 million blogs, and sold it to Yahoo earlier this year for $1.1 billion. Under its new parent—and CEO Marissa Mayer (see No. 1)—Tumblr is reportedly aiming for $100 million in sales this year from advertising, up from an estimated $13 million generated last year.