IDG’s PC World Dominates as the Most Widely-Read Computer or Business Magazine; MRI Fall 2005 shows PC World grew 11.3% in year-over-year readership; award-winning magazine also tops the competition in reach to the professional/managerial audience.

SAN FRANCISCO, CA – NOVEMBER 16, 2005 – According to the just-released MediaMark Research Inc. (MRI) Fall 2005 Survey of American Consumers, PC World continues to lead its competitive set in readership, with 11.3% year-over-year growth from Fall 2004. In addition, PC World outdistances the competition in reach to the highly desirable professional/managerial audience.

MRI FALL 2005

PC World vs. Select Computer and Business Magazines

Average Issue Audience (000) PC World Advantage Professional/ Managerial Audience (000) PC World Advantage

PC WORLD 5,276 — 2,412 —

PC Magazine 5,097 179,000 2,087 325,000

Business Week 4,724 552,000 1,925 487,000

Forbes 4,666 610,000 1,902 510,000

Fortune 3,971 1,305,000 1,627 785,000

Computer Shopper 2,232 3,044,000 957 1,455,000

Inc. 1,132 4,144,000 369 2,043,000

"For over twenty years, PC World has effectively fulfilled the needs of our tech-savvy management audience," stated Wayne E. Silverman, vice president/publisher of PC World. "Advertisers will benefit from reaching over 5.2 million readers, and specifically, the largest professional/managerial audience in its competitive set."

Furthermore, PC World once again outperforms its closest competitor, PC Magazine, in key affinity measures. These statistics are critical, as they clearly demonstrate that PC World is more intensely read. "Mean Reading Days," a measure advertisers value, shows that readers spend over 13% more time with the editorial and advertisements contained in PC World than with PC Magazine.

MRI FALL 2005

PC World vs. PC Magazine

Read 3:4 or 4:4 issues PC WORLD 2,920,000 PC Magazine 2,738,000 PC World Advantage 182,000

Mean Reading Minutes 51 45 13.3%

Mean Reading Days 2.2 2.0 10.0%

Mean Page Exposure 1.9 1.4 35.7%

MRI Fall 2005 is the third consecutive research release reaffirming PC World's leadership position as the most widely-read computer or business magazine. Results from MRI Spring 2005 and IntelliQuest CIMS 2005 studies also recognized PC World as the leader of its competitive set. Quality readership is the result of quality content, and PC World's editorial and design teams have had an extremely successful year as well, with eight National ASBPE awards, a Jesse H. Neal award for Best Web Site for the second consecutive year, and a Maggie Award for Best Computer Magazine in the Consumer category.

About PC World:

PC World Communications, Inc., a subsidiary of IDG, is the publisher of PC World, PCWorld.com ( http://www.pcworld.com/ ), and home of the PC World Test Center. The winner of the 2005 Maggie Award for Best Computer/Consumer magazine, PC World is the most widely-read computer or business magazine with a readership of over 5.5 million (MRI, Spring 2005). With over 6.5 million unique visitors per month (HitBox, October 2005), PCWorld.com, winner of the 2005 Neal Award for Best Web Site, is a leading online resource for technology product buyers and users.

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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