Macworld Conference & Expo 2005 San Francisco Gains 11% Attendance Increase with Nearly 36,000 Overall Visitors

FRAMINGHAM, MA – MARCH 28, 2005 – IDG World Expo, the leading producer of world-class tradeshows, conferences and events for technology markets, today announced positive results from the attendance certification audit performed by Exhibit Surveys, Inc., for Macworld Conference & Expo(R) in San Francisco, held January 10-14, 2005, at the Moscone Center. The number of overall visitors increased 11% from the 2004 event. There were 35,989 overall visitors in 2005, compared to 32,409 in 2004.

Other highlights of this year's successful event in San Francisco include:

— 31% increase in the average number of hours spent on the exhibit hall floor by attendees. The average number of hours attendees spent visiting exhibits in 2005 was 10.1 hours over two days – compared to 7 hours over two days in 2004.

— 13% increase in paid conference delegates. 3,358 attendees paid to attend the educational conference program in 2005 – compared to 2,918 in 2004.

— 10% increase in the total number of companies that exhibited at Macworld. There were 275 exhibiting companies on the exhibit hall floor in 2005 – compared to 250 in 2004. Exhibiting companies in 2005 included: Apple, Adobe, MacMice, Microsoft, Quark, Nikon, Canon, FileMaker, Fujitsu and HP, among others.

— A record number of exhibiting companies signed up on-site during Macworld San Francisco 2005 to exhibit again at Macworld San Francisco in 2006.

MacMice (a division of DVForge, www.dvforge.com ) exhibited their newest products at Macworld San Francisco 2005. Jack Campbell, CEO of DVForge, said, "Our company is growing extremely quickly based on the popularity of our products. Media attention is a critical factor in sustaining that growth, and the press coverage we received at Macworld was outstanding. Our investment into exhibiting at Macworld San Francisco '05 has been the smartest move we have made. We achieved every goal we had set for this show, and we've upgraded the size of our exhibit space for Macworld San Francisco 2006. For any company serious about selling into the Mac/iPod channel, Macworld is a required event."

Carlton Osborne, CEO of Printroom.com ( www.printroom.com ) said, "We were initially not sold on exhibiting at Macworld, because our target market is professional photographers – and we weren't sure if we were going to be a 'needle in the haystack.' But the show turned out great for us, and we've already signed up to exhibit next year."

80% of attendees listed their primary businesses/industry in the following categories:

— Education professionals

— Design-Creative Services professionals

— Film-Video-TV professionals

— Photography-Digital Imaging professionals

— Web Design professionals

— Printing-Publishing-Production professionals

— Music-Audio professionals

— Software/Application Development/ISV professionals

"We are thrilled by the success of this year's Macworld, and we are particularly pleased about the success that each of the exhibiting companies had," said Richard Feldman, group vice president, IDG World Expo. "The large increase in attendance and time spent on the exhibit hall floor by attendees is a great sign for an IT event in this day and age. Not only did Macworld provide a large audience, but more importantly, it was a very targeted audience that provided high-quality leads to exhibiting companies."

Beginning in 2004, IDG World Expo has had attendance figures for Macworld Conference & Expo (as well as all of its other events) verified by an independent event auditing company. Exhibit Surveys, Inc. performed the audit for the 2005 event and included the following statement with the final, audited figures:

"Exhibit Surveys, Inc. has examined the complete attendee registration database provided by IDG World Expo. Our examination included verification of all attendance figures and demographic reports based on the database provided. In addition, tests were conducted to verify actual attendance by members of the database to the exhibition. Based on our examination and tests, the total attendance and other data contained in this report are fairly stated in all respects."

The official audit has been made available to the public and can be found at: http://www.macworldexpo.com/live/images/other/FINAL_McwrldS F05_AUDIT.pdf. (Due to the length of this URL, it may be necessary to copy and paste it into your Internet browser's URL address field. You may also need to remove an extra space in the URL if one exists.)

Next year's Macworld Conference & Expo in San Francisco will take place January 9-13, 2006, at The Moscone Center. Macworld Conference & Expo Boston 2005 will take place July 11-14 at the Hynes Convention Center.

For more information or to register for Macworld Conference & Expo Boston 2005, please visit www.macworldexpo.com .

About Macworld Conference & Expo

Owned and produced by Framingham Mass.-based IDG World Expo, Macworld Conference & Expo is the world's most comprehensive Macintosh OS event. Macworld Conference & Expo showcases products and services for professionals involved in media and creative content development for corporate and home applications, as well as prosumers using the Mac at home. Macworld Conference & Expo brings together the loyal base of Mac OS audiences in creative services, education, application development, entertainment, small office/home office and Internet-based environments. Macworld Conference & Expo offers professionals and prosumers alike the opportunity to discover the latest developments and hottest products these markets offer. For more information or to register for the event, please visit the Web site at www.macworldexpo.com , or call (800) 645-EXPO. For exhibiting opportunities, please contact Annie Rice at (508) 424-4839 or annie_rice@idg.com or Ron Moreau at (508) 424-4804 or ron_moreau@idg.com.

About IDG World Expo

IDG World Expo ( www.idgworldexpo.com ) produces technology-focused tradeshows, conferences and events for professionals seeking world-class education, peer-to-peer networking and one-stop comparison shopping. As the leading technology event management company, IDG World Expo leverages its experience and knowledge of technology-focused events and conferences, enabling technology companies to capture the attention and loyalty of influential buyers. IDG World Expo's portfolio of conferences and events includes Macworld Conference & Expo(R), LinuxWorld Conference & Expo(R), Bio-IT World Conference + Expo(TM), Wireless Sensing Solutions(TM), Syndicate(TM), RoboBusiness and RoboNexus. IDG World Expo is a business unit of IDG, the world's leading technology media, research and event company.

About IDG

International Data Group (IDG) is the world's leading technology media, research, and event company. A privately-held company, IDG publishes more than 300 magazines and newspapers including Bio-IT World, CIO, CSO, Computerworld, GamePro, InfoWorld, Network World, and PC World. The company features the largest network of technology-specific Web sites with more than 400 around the world. IDG is also a leading producer of more than 170 computer-related events worldwide including LinuxWorld Conference & Expo(R), Macworld Conference & Expo(R), DEMO(R), and IDC Directions. IDC provides global market research and advice through offices in 50 countries. Company information is available at http://www.idg.com .

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