IDG World Expo and Informa Alliances Enter License Agreement to Expand Events to UK; Syndicate, Wireless Sensing Solutions, Open Source Business Conference to be produced in UK

FRAMINGHAM, MA – JANUARY 23, 2006 – IDG World Expo, the leading producer of world-class tradeshows, conferences and events for technology markets and Informa Alliances, a division of Informa plc, today announced a license agreement wherein Informa Alliances will produce several IDG World Expo events in the UK including Syndicate(TM), Wireless Sensing Solutions(R), and Open Source Business Conference(TM) (OSBC(R)). The first scheduled event is OSBC which is targeted for April 2006 in London.

"IDG World Expo has events that reach every corner of the globe, and this license agreement with Informa Alliances is a perfect fit for us," said David Korse, CEO of IDG World Expo. "Informa Alliances has extensive exhibition and conference production experience, they excel as content specialists, and they have the ability to roll out high-quality events across a number of markets very quickly."

"We are very pleased to partner with IDG World Expo to produce these three events in the UK," said Rory Ross Russell, Managing Director, Informa Alliances. "Open source, wireless sensor networking and content syndication technologies and tools are topics that very much interest businesses in the UK. These events will create a unique opportunity for event participants to experience the latest domestic and international products and speakers in these fast-paced and exciting markets."

OSBC is designed for IT business executives (buyers and vendors), venture capitalists, attorneys, and other decision-makers tasked with developing businesses that leverage open source software. It explores the legal, investment, vendor and customer risks, rewards, and opportunities presented by open source software.

Wireless Sensing Solutions explores the recent successful deployments of wireless sensor networking – based on sophisticated mesh networking techniques – while providing a unique forum for design engineers, product development managers, system and application developers and executive management to discuss evolving standards, interoperability, technologies and product strategy.

Syndicate shows how syndication and social media tools such as RSS, blogs and podcasts are transforming the way businesses do business. The conference focuses on emerging technologies for content owners and producers, new media executives, marketers, advertisers and public relations professionals.

About IDG World Expo

IDG World Expo ( ) 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), 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 Informa Alliances

Informa Alliances is part of the informa group of companies. Informa is a FTSE-250 company listed on the London Stock Exchange. We currently have offices in over 40 countries worldwide and employ almost 7,000 staff with major centres in the UK and the USA. Informa is a unique business. With over 40,000 books in print, over 2,500 subscription-based products and almost 10,000 events produced per year, no other group has our combination of publishing presence and events expertise.

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 .