The first Web 2.0 conference was held October 5th to 7th, 2004 at the Hotel Nikko in San Francisco, and is believed to be the point at which the term Web 2.0 came into popular usage.

Speakers at Web 2.0 Conference 2.0, 2004

Jeff Bezos, Amazon.Com.

Mark Cuban, HDNet.

John Doerr, Venture Capitalist for Compaq, Netscape, Symantec, Sun Micro Systems, Amazon.com.

Mary Meeker, Wall Street securities analyst known as “Queen of the Net”

Craig Newmark, CraigsList founder and vocal advocate of keeping the internet free.

Marc Andreessen, Cofounder of Netscape Communications Corporation and Co-Author of Mosaic , the first widely used web browser.

George Conrades, Amamai.Com.

James Currier, CEO Tickle.

Cory Doctorow,  Co-Editor of blog Boing Boing.

Bill Gross, CEO - Business Incubator Idealab

Bill Gurley

William H. Janeway,

Brewster Kahle, Creator of "Universal Access to all Knowledge" slogan.

Lawrence Lessig, Professor of law at Stanford Law School.

Udi Manber, Achiever of Presidential Young Investigator

John McKinley, U.S. Senator from the state of Alabama.

Halsey Minor,  Founder of CNET.

Louis Monier, Founder of AltaVista.

Richard F. Rashid

Martin Nisenholtz

Mike Ramsay

Dan Rosensweig, COO of Yahoo! Inc.

David L. Sifry, Founder of StreamCastNetworks, Inc specialized in Peer-to-Peer software.

Michael Weiss

Jake Winebaum

Jerry Yang, Co-Founder of Yahoo! Inc.

The Web 2.0 Conference (2005) was a conference held in 2005 about the transition from the world wide web, or Web 1.0, to the emerging Web 2.0.

Speakers at WebCon 2.0, 2005

Stewart Butterfield, Yahoo! Inc.

Mark Cuban, HDNet

Bran Ferren, Applied Minds, Inc.

Bram Cohen, BitTorrent

Yusuf Mehdi, Microsoft, Inc.

Tim O'Reilly, O'Reilly Media, Inc.

Greg Ballard, Glu Mobile

Mena Trott, Six Apart

Joe Kraus, JotSpot

Jonathan F. Miller, AOL

Vinod Khosla, Kleiner, Perkins, Caufield & Byers

Kim Polese, SpikeSource

Barry Diller, IAC/InterActiveCorp

Raph Koster, Sony Online Entertainment

Mary Meeker, Morgan Stanley

Terry Semel, Yahoo!

The third Web 2.0 conference was held November 7th to 9th, 2006 at the Palace Hotel  in San Francisco, and focuses on utilizing the Web As A Platform and save the dates for next year; October 17th – 19th 2007at the Palace Hotel.