Dallas Cowboys Taps Limelight Networks’ Content Delivery Network for Digital Media Distribution

Limelight’s reliable, scalable performance ensures that Cowboys fans’ expectations for live and on-demand streaming media content are always met

TEMPE, AZ – May 22, 2006 – Limelight Networks, the world’s leading content delivery network for digital media, today announced it is providing the digital media delivery infrastructure for the Dallas Cowboys web site, which offers fans of the perennial National Football League powerhouse a rich variety of informative and entertaining video and audio content. Leveraging the Limelight delivery platform, DallasCowboys.com is now providing immediate, always-on access to breaking Cowboys news — including the latest round of college draft picks, now underway — as well as interviews with players, head coach Bill Parcells, and owner and general manager Jerry Jones. In addition, the site provides coverage of the Cowboys’ cheerleaders and the Dallas Desperados, the organization’s Arena Football League team.

“With so much exclusive video content on their favorite team streaming to their PCs, portable media players and mobile phones — virtually any IP-connected device — eager Cowboys fans can stay stoked and enthusiastic between games,” said Lou Greco, Vice President of Sales at Limelight. “We’re proud to be chosen as the content delivery network for the Cowboys organization, fully aware that a growing number of fans are adopting a digital lifestyle and making anytime, anyplace visits to the Cowboys site a regular part of their lives.”

“We selected Limelight Networks based on its solid reputation for providing the reliable, scalable performance we need to leverage the Internet in reaching out to our fan base,” said Jerry Jones, Jr., Chief Sales and Marketing Officer of the Dallas Cowboys and President and General Manager of the Dallas Desperados. “DallasCowboys.com plays an important and growing role in enabling us to interact and connect with our fans on a continuous basis. Live and on-demand video of the Cowboys and related content on our site greatly enhances that process.”

About DallasCowboys.com

At the recent 2006 NFL Business Summit, DallasCowboys.com was recognized by 32 NFL team web site directors for having the best content over the past year in the league. The award took into consideration the quality writing material provided by DallasCowboys.com, as well as the video updates, video shows, live Internet broadcasts and all the press conferences made available to visitors to the site.

Safe-Harbor Statement

This press release contains forward-looking statements concerning the company's operations and use of acquired technology and intellectual property. Forward-looking statements are not guarantees and are subject to a number of risks and uncertainties that could cause actual results to differ materially including, risks associated with the integration of acquired business operations and other risks described in the company’s quarter report on Form 10Q and other periodic reports filed with the Securities and Exchange Commission. The Company assumes no duty or obligation to update or revise any forward-looking statements for any reason

About Limelight Networks, Inc.

Limelight Networks, Inc. (NASDAQ: LLNW) provides on-demand software, platform and infrastructure services that help global businesses reach and engage audiences on any mobile or Internet-connected device, enabling them to enhance their brand presence, build stronger customer relationships, optimize their advertising, and monetize their digital assets. For more information, please visit http://www.limelightnetworks.com or follow us on Twitter at http://www.twitter.com/llnw/.

Media Contact:

Paul Alfieri of Limelight Networks, Inc.
+1-917-297-4241
palfieri@llnw.com