The Web Celeb 25 (5-10)

Our No.5 Web Celeb,  Frank Warren
Age: 44
What: Online artist
Got a secret? Write it on a homemade postcard and send it to PostSecret, Frank Warren's ongoing community art project. Since its inception in 2005, the project has collected

and displayed upward of 250,000 original pieces of art on its blog. Audiences have fallen for the formula: A 2008 survey by market research firm Youth Trends showed it was

the 10th most popular site on the Internet among female college students. Four books of collected confessions have been published to date, most recently, A Lifetime of

Secrets. As for Warren, he's hardly been keeping quiet: He's appeared on Today, 20/20, CNN, MSNBC, NPR, Fox News and more.

Our No. 6 Web Celeb, Cory Doctorow
Age: 37
What: Author and blogger
Cory Doctorow is a prominent activist for digital rights, and serves as a fellow of the Electronic Frontier Foundation. He's one of the editors of Boing Boing, a hugely

influential and popular blog about technology, culture and politics. And he's also a science fiction novelist, particularly famous on the Web, where he gives away his novels for

free In 2008, Doctorow published his first young adult novel, Little Brother, "a fictionalized manual for how to build an underground resistance to an evil government."

Our No. 7 Web Celeb, Pete Cashmore
Age: 23
What: Tech blogger
Tech media wunderkind Pete Cashmore started working as a Web technology consultant when he was a teenager, and founded the Web site Mashable from his home in

Scotland when he was just 19. Now based in Silicon Valley, it's a must-read for the tech cognoscenti, and Cashmore is widely regarded as an expert on how to use, consume

and profit from social media.

Our No. 8 Web Celeb, Heather Armstrong
Age: 33
What: Blogger, mom
Heather Armstrong first made news back in 2002, when she was fired from her job because she'd been writing about work in her personal blog. The site, Dooce.com, is

named for a typo committed when she tried to spell "dude" during an instant messaging chat. It follows Armstrong's adventures as a Salt Lake City stay-at-home-mom. In

2008, Armstrong released a book of essays compiled from bloggers, Things I Learned About My Dad: In Therapy.

Our No. 9 Web Celeb, Guy Kawasaki
Age: 54
What: Entrepreneur, blogger
Guy Kawasaki might be new to the Web Celeb 25, but he's no technology naïf. He's been a venture capitalist, entrepreneur and author; as an employee for Apple Computer, he

was on the team that helped launch and market the original Macintosh in 1984. Today he runs several start-ups, including information aggregator Alltop. He also blogs, gives

speeches, is frequently quoted in the media, and perhaps most importantly, is a top user of the micro-blogging site Twitter, as well as the most "retweeted": Over the past two

months, his posts have been shared and re-posted more than any other user's.

Our No. 10 Web Celeb, Jason Calacanis
Age: 38
What: Entrepreneur, blogger
Jason Calacanis is a media entrepreneur who created some of the Web's hottest sites: As the co-founder of publishing company Weblogs Inc, Calacanis oversaw the creation of sites like Engadget and Joystiq. In 2005, the company was sold to AOL for a reported $25 million. Today he runs Mahalo.com, a human-moderated search engine; appears frequently in media as a tech expert; and is a top user on microblogging site Twitter. Calacanis returns to the Web Celeb 25 list this year; he ranked No. 23 in 2007, but dropped off in 2008.