(EMAILWIRE.COM, January 31, 2001 ) San Mateo, California, - Streaming content available to online fans on the official Super Bowl site at www.superbowl.com delivered a touchdown with exceptional quality and performance over the weekend, according to Keynote (Nasdaq: KEYN), the Internet performance authority(tm). According to the Keynote Scale for Streaming(tm), an industry standard for ranking streaming quality on a scale from 0 to 10, the superbowl.com streams ranked very highly, in the 5.78 range, with rendering quality of 100%, based on the site's ability to deliver its intended quality. Yet, access to the site's homepage slowed almost four times to 9.18 seconds from 6:00pm to 7:00pm as online fans were invited to vote for Most Valuable Player, compared to the site's normal performance of two to three seconds.

Web site performance for the Super Bowl advertisers was good overall prior to and during the game, with both Hotjobs.com and XFL.com markedly improving the weekend of the game compared to the prior weekend. With Web page size remaining constant, the improvement suggests that both sites made server or infrastructure changes to prepare for increased traffic resulting from their Super Bowl ads. Hotjobs.com's site performance averaged 1.18 seconds during the game compared to 6.93 seconds the previous Sunday afternoon, and XFL.com
improved to 2.30 seconds during the game from 9.46 seconds the previous
Sunday afternoon.

Exceptions included Mastercard.com and VW.com, both slowing significantly during the game broadcast. It took online users as much as three times as long to access Mastercard.com during the game as before, with the site slowing to 14.39 seconds between 7:00 and 8:00pm and 87 percent availability from an average 4.44 seconds that morning. VW.com slowed from 2.72 seconds before the game to 4.20 seconds during the game. Two sites, VW.com and Sonypictures.com, exhibited very slow performance Monday morning following Sunday's game, with VW.com slowing to 12.41 seconds and Sonypictures.com to 65.26 seconds (from an average under 6.0 seconds during the game) as fans returned to work.

"Superbowl.com and its partners did an excellent job streaming from the
site, with very high quality and availability, delivered at a high bandwidth," said Dan Todd, Chief Technologist for Public Services at Keynote. "If all sites could stream at this rate, the overall quality of streaming content on the Web would be much higher. The streaming performance of Superbowl.com is two full points higher than the typical average on the Keynote Scale for Streaming."

Keynote measured the performance and availability of Web sites for 36
companies advertising during the Super Bowl from 5:00am to 8:00pm PST on Saturday and Sunday, January 27 and 28, 2001. Keynote also measured the performance of representative streams on the superbowl.com site, including the press conference streams for both the Giants and Ravens teams, and the Super Bowl Diaries web cast from the site. Keynote took streaming measurements from 8:00am to 8:00pm on January 27 and 28 from its streaming performance measurement computers in 10 major cities throughout the U.S.

Keynote measured Web site performance using its automated measurement
computers at 66 Internet access points in 25 metropolitan areas around the United States which are connected to the Internet via T-1 and T-3
communication lines.

Keynote 2001 Super Bowl Performance Report
- Streaming Quality on www.superbowl.com -
Stream Quality* / Rendering Quality**
Giants' Press Conference
Saturday, 1/27
8:00am - 3:00pm: 5.78 / 100%
3:00 - 8:00pm: 5.78 / 100%
Sunday, 1/28
8:00am - 3:00pm: 5.78 / 100%
3:00 - 8:00pm: 5.77 / 100%
Ravens' Press Conference
Saturday, 1/27
8:00am - 3:00pm: 5.77 / 100%
3:00 - 8:00pm: 5.78 / 100%
Sunday, 1/28
8:00am - 3:00pm: 5.77 / 100%
3:00 - 8:00pm: 5.71 / 99.0%
Super Bowl Diaries
Saturday, 1/27
8:00am - 3:00pm: 4.85 / 93.0%
3:00 - 8:00pm: 4.86 / 93.0%
Sunday, 1/28
8:00am - 3:00pm: 4.86 / 93.0%
3:00 - 8:00pm: 4.86 / 93.0%

*Stream Quality directly reflects the end user quality of experience. It combines the playback quality of the audio and video portions of the stream with the type of encoding used on the original content. 10 on the Keynote Scale for Streaming is equal to DVD quality.
**Rendering Quality is a measure of how well the stream was played relative to what was intended by the web caster.

Source: Keynote (Nasdaq: KEYN). Keynote, The Internet Performance Authority®, is the worldwide leader in e-commerce benchmarking and Web performance management services that improve the quality of e-business.
About Keynote Founded in 1995, Keynote (Nasdaq "KEYN"), The Internet Performance Authority®, is the worldwide leader in e-commerce benchmarking and Web performance management services that improve the quality of e-business. The company's low-cost and hassle-free performance measurement solutions are used by more than 2,900 B2B and B2C e-businesses, Web-hosters, Internet Service and Content Delivery Providers. Keynote Systems, Inc. is headquartered in San Mateo, California. The company can be reached at www.keynote.com or by phone in the U.S. at 650-522-1000.

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Keynote Systems, Inc.
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(650) 522-1343

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