Jason McCabe Calacanis is an Greek-American internet entrepreneur and blogger. His first company was part of the dot-com era in New York, and his second venture capitalized on the growth of blogs before being sold to AOL.

According to Forbes, which ranked it 23rd on the list of most popular web celebrities:

If there’s a Joe Pulitzer if the blogging world, it may well be Jason Calacanis, the media entrepreneur who’s created some of the Web’s hottest sites. As the co-founder of Weblogs Inc, Calacanis oversaw the creation of top sites like Engadget, Joystiq and Slashfood; in October 2005, the company was sold to AOL for a reported $25 million. Following a short stint where he redesigned and relaunched AOL’s Netscape.com, Calacanis recently moved on to become an “entrepreneur in action” at Sequoia Capital. But Calacanis isn’t just a businessman–his personal blog is one of the most popular on the Web.

Calacanis’ latest venture is Mahalo.com, a “human-powered search engine”, which launched in May 2007.