Jupiter Media Metrix Announces UGIVE Interactive in Top 5 Newcomers for Unique Visitors.

New York -- (Sep 17, 2001) -- Jupiter Media Metrix (NASDAQ: JMXI), the global leader in Internet and new technology analysis and measurement, today released the Media Metrix U.S. Top 50 Web and digital media property ratings for August 2001.

Jupiter Media Metrix Announces UGIVE Interactive in Top 5 Newcomers for Unique Visitors.

Jupiter Media Metrix Announces U.S. Top 50 Web And Digital Media
Properties For August 2001

Jupiter Media Metrix (NASDAQ: JMXI), the global leader in Internet and new technology analysis and measurement, today
released the Media Metrix U.S. Top 50 Web and digital media property ratings for August 2001

Media Metrix
Top Newcomers - Unique Visitors At Home and At Work Combined in the U.S.
August 2001

Site — Unique Visitors (000)
MONEY.NET — 1,992
EASILYFREE.COM — 1,676
UGIVE.com — 1,419
GREATPLUGIN.COM — 1,321
JJAB.COM — 1,272
MINICLIP.COM — 1,155
PM0.NET — 1,078
NETSOL.COM — 868
GOLDENTIGERCASINO.COM — 814
BURKE.COM — 788
CELLULARSAFETYCOMMISSION.COM — 760
OFFEREDBY.NET — 747
EXITDIRECT.COM — 742
1XIN.NET — 683
SUMMERSLAM.COM — 666
MUSL.COM — 652
OPT-IN-NET.NET — 621
ENCARTACHALLENGE.COM — 605
CINEMACASINO.COM — 602
YOURINTERESTSONLY.COM — 566
MRSMILEY.COM — 563
GOLDBROWSER.COM — 530
HITTHECODE.COM — 517


* Represents an aggregation of commonly owned and/or branded domain names.


Definitions for Media Metrix Digital Media and Web Ratings
Digital Media includes users of the World Wide Web, proprietary online services, and/or other ad-supported digital applications such as e-mail services and CD ROM.
Digital Media & Web Properties include the largest single brands as well as consolidations of multiple domains that fall under one brand or common ownership.
Top 50 Digital Media & Web Properties: The Top 50 Digital Media & Web properties are based on unduplicated audience reach, also known as unique visitors.
Unique Visitors: The actual number of total users who visited the reported Web site or online property at least once in the given month. All Unique Visitors are unduplicated (only counted once) and are in thousands.
Media Metrix Top Newcomers: A site that garnered a minimum of 500,000 unique visitors and was among the top-ten newcomers during its debut month in the Media Metrix syndicated audience ratings.
Total Usage Minutes (000,000): The total number of usage minutes spent at the Web site, category, channel, or application during the course of the reporting period.
Average Minutes Per Usage Month: The average total number of minutes spent on the Web site, category, channel, or application during the month, per visiting person.


About Jupiter Media Metrix
Jupiter Media Metrix is the global leader in Internet and new technology analysis and measurement. The company delivers innovative and comprehensive Internet measurement, analysis, intelligence and events to provide businesses with unmatched global resources for understanding and profiting from the Internet. Jupiter Media Metrix brings together world-class, innovative and market-leading products, services, research methodologies and people. Jupiter Media Metrix brands include Media Metrix, AdRelevance, Jupiter Research and Jupiter Events. The Company is headquartered in New York City and operates worldwide, across the Americas, Asia Pacific, Europe (as Jupiter MMXI Europe), and the Middle East. Visit us at www.jmm.com for more information.
This press release contains statements of a forward-looking nature relating to future events or future financial results of Jupiter Media Metrix. Investors are cautioned that such statements are only predictions and that actual events or results may differ materially. In evaluating such statements, investors should specifically consider various factors, which could cause actual events or results to differ materially from those indicated from such forward-looking statements, including the matters set forth in Jupiter Media Metrix reports and documents filed from time to time with the Securities and Exchange Commission.


Press Contacts Elizabeth Perrine
Corporate Strategies Group, Inc
480.607.0070
eperrine@csgmarketing.com