VitalStream, Inc. (Nasdaq: VSTH), a world leader in audio and video streaming, has been selected by MySTACK, the first online video site and social network created exclusively for high school athletes, to provide its Flash video streaming service enabling them to demonstrate skills and interact with peers and recruiters worldwide.

MySTACK, a complement to STACK Magazine, the nation's leading publication for high school athletes, was created specifically to help teen athletes show off their skills. MySTACK expects to evolve into the nation's premier destination for high school sports video.

With VitalStream's Streaming Service for Flash, MySTACK users can easily upload personal video profiles and clips of their best performances to build an 'online sport resume'. VitalStream's proprietary transcoding framework, configured to STACK Magazine's specific requirements, enables students to submit videos in most formats, including Windows Media, Quicktime, MPEG, DV and 3GP. VitalStream converts the video clips to Flash 8 and streams them on the MySTACK Web site, ensuring that all online content is of high-quality and deployed easily.

"MySTACK is a compelling example of why consumer-generated video content is helping to drive audience growth on the Internet," said Jack Waterman, Chairman and CEO of VitalStream. "VitalStream will provide MySTACK with a set of rich content delivery and reporting solutions that drive a dynamic user experience and enable MySTACK to effectively manage their streaming requirements"

"As the pioneer of the original Flash video streaming platform, we believe that VitalStream was the best vendor to help stream high-quality video content for our users," said Nick Palazzo, Co-Founder of STACK. "MySTACK is uniquely positioned to become the ultimate recruiting tool and premier destination for high school sports video. Thus, we needed a flexible, cutting-edge solution like VitalStream's to help us best meet our subscribers' needs."

VitalStream's customer base includes Fortune 500 corporations, movie studios, news broadcasters, music companies and advertising agencies, including ABC Radio, CNET, Disney and MySpace. For more information, please visit www.vitalstream.com.

About VitalStream, Inc.
VitalStream, Inc., a wholly owned subsidiary of VitalStream Holdings, Inc., is a global provider of integrated content delivery services that enable businesses to stream digital media to large audiences over the Internet. The company provides solutions, including video and audio streaming, advertising placement, reporting and analysis, live event broadcasting, media asset management, integrated Web hosting and consulting services.

About STACK, LLC
STACK is a media company dedicated to serving the needs of high school athletes. Since February 2005, STACK has pioneered in delivering safe and effective sports performance information and lifestyle content to this hard to reach market segment. Having established partnerships with nearly 4,000 high schools, STACK is a multi-platform leader, connected to active teen males- and their support networks-through MySTACK, STACK Magazine, STACKMag.com, STACK Events and STACK Films. Information in this release regarding Stack, LLC was provided by Stack, LLC.