Registration for Macworld Conference & Expo San Francisco Now Open

FRAMINGHAM, MA – September 30, 2005 – IDG World Expo, the leading producer of world-class tradeshows, conferences and events for technology markets, today announced that attendee registration is now open for Macworld Conference & Expo(R), taking place January 9-13, 2006 at San Francisco's Moscone Center. Attendees who register before December 9, 2005 at http://www.macworldexpo.com will receive early bird pricing rates.

A brand new conference feature for this year's Macworld:

— Market Symposiums: These special day long conference events are designed to help people in specific markets get the most out of their Mac computing experience. Currently planned Symposiums include: Small Business, Education (K-12), Podcasting, Art Directors, and New Media Artists.

For more information or to register for the event, please visit http://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 http://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 (http://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. IDG World Expo's portfolio of conferences and events includes Macworld Conference & Expo(R), LinuxWorld Conference & Expo(R), Wireless Sensing Solutions(R), Syndicate(TM), GridWorld(TM), Real Time CRM Solutions(TM), OSBC(R), Digital ID World(R), 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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