E for All Expo Adds MTV Networks’ GameTrailers and Xfire to Its Growing List of Leading Industry Exhibitors

FRAMINGHAM, MA. – October 4, 2007 – IDG World Expo today announced that GameTrailers and Xfire, both divisions of Viacom Inc.’s (NYSE:VIA) (NYSE:VIA.B) MTV Networks Entertainment Group, have signed on to participate in Entertainment for All™ Expo (E for All™) ( www.EforAllExpo.com ), scheduled for October 18-21, 2007, at the Los Angeles Convention Center. The two MTV Networks gaming brands join a list of more than 70 participating companies in the consumer-friendly interactive entertainment event.

E for All attendees and fans at home will have the opportunity to get up close and personal with GameTrailers’ extensive interactive stage. Xfire™ gaming stations will offer mini-tournaments and “shoot the pro” challenges along with live celebrity chats from the floor. In addition, GameTrailers’ original shows, “Bonus Round” and “Game One” will shoot on-location, featuring exclusive, live interviews with industry luminaries, top gamers and fans onsite.

“GameTrailers and Xfire wouldn’t miss the opportunity to participate in E for All and look forward to bringing the show home to the GT community with our in depth coverage,” said Jon Slusser, SVP Spike digital media entertainment group.

In addition to their plans for on-site, the two brands – GameTrailers and Xfire – have planned contests and promotions surrounding their participation in E for All Expo – including ticket giveaways and prizes leading up to and on-site at this inaugural event.

“We are thrilled to have GameTrailers and Xfire on board for E for All,” said Mary Dolaher, CEO of IDG World Expo. “Their interactive stage will be a huge draw for game fans at the event. E for All is all about the people who are passionate about games, and this kind of content provides even more opportunity for the community of gamers to gather.”

About E for All™

Produced by IDG World Expo, Entertainment for All(TM) Expo (E for All™) ( www.EforAllExpo.com ) is North America’s premiere video game event. A celebration of video games and the people who play them, the event will bring together the entire game community, from consumers and media to publishers, developers and retailers. The Expo will feature exhibits from leading interactive entertainment companies that will allow consumers to try and buy the newest video games and gadgets. Other event highlights include the Major League Gaming’s competitive gaming tournament, the acclaimed Video Games Live™ concert, celebrity appearances, the Game Developers Conference (GDC) Game Careers Seminar, and "Into the Pixel," an exhibition of video game art. For more information, please visit www.EforAllExpo.com . Companies interested in learning more about exhibit opportunities, please contact Richard Kazarian at 508-424-4828, or email richard_kazarian@idg.com.

About GameTrailers

GameTrailers (GT) is the premier video destination for gaming entertainment and information. GT delivers timely, high-resolution broadband video content for gamers including original shows, video reviews, game trailers and comprehensive video coverage of gaming events from around the world. GT also has a robust community that features user-generated content, a community marketplace and a variety of communication tools so gamers can talk to friends and share media such as fan movies, machinima and daily blogs. GT has offices in Los Angeles, San Francisco and New York and is a division of Viacom Inc.’s (NYSE:VIA) (NYSE:VIA.B) MTV Networks Entertainment Group.

About Xfire, Inc.

Xfire, Inc. one of the fastest growing online gaming platform and community in the world helping gamers to easily connect, chat and play with their friends online. Xfire is a free service that allows gamers to easily browse for game servers, chat with friends through IM and voice chat, as well as download the latest updates and additions to their favorite games. With more than eight million members in over 100 countries, Xfire is an international community connecting gamers across the globe. Xfire is a wholly owned subsidiary of MTV Networks and is based in Menlo Park, CA.

About MTV Networks

MTV Networks, a unit of Viacom (NYSE:VIA) (NYSE:VIA.B), is one of the world’s leading creators of programming and content across all media platforms. MTV Networks, with more than 130 channels worldwide, owns and operates the following television programming services – MTV: MUSIC TELEVISION, MTV2, VH1, mtvU, NICKELODEON, NICK at NITE, COMEDY CENTRAL, TV LAND, SPIKE TV, CMT, NOGGIN, VH1 CLASSIC, LOGO, MTVN INTERNATIONAL and THE DIGITAL SUITE FROM MTV NETWORKS, a package of 13 digital services, with all of these networks trademarks of MTV Networks.MTV Networks connects with its audiences through its robust consumer products businesses and its more than 200 interactive properties worldwide, including GameTrailers.com, IFILM, Neopets, Xfire, Y2M, and online, broadband, wireless and interactive television services. MTV Networks also has licensing agreements, joint ventures, and syndication deals whereby all of its programming services can be seen worldwide.

About IDG World Expo

IDG World Expo ( www.idgworldexpo.com ) is a leading producer of tradeshows and events for professionals and consumers seeking world-class education, peer-to-peer networking and one-stop comparison shopping. IDG World Expo's portfolio of conferences and events includes Entertainment For All™ (E For All™), E3 Media & Business Summit, GreenXchange Xpo™, LinuxWorld Conference & Expo®, Macworld Conference & Expo® and Next Generation Data Center™ (NGDC™). IDG World Expo is a business unit of IDG, the world's leading technology media, research and event company.