NEW YORK, November 2, 2000 - Jupiter Media Metrix, Inc. (NASDAQ: JMXI), the global leader in market intelligence for the new economy, today announced strong revenue performance and client growth metrics for the third quarter ended September 30, 2000.

Revenues for the third quarter rose to $16.5 million, a 31 percent increase over revenues of $12.6 million for the second quarter of 2000, and a 199 percent increase over revenues of $5.5 million for the same period in 1999. Reported revenues for the quarter reflect Media Metrix results though September 30, 2000, combined with Jupiter Communications results from September 21 through September 30, 2000. Media Metrix and Jupiter completed their merger on September 20 to form Jupiter Media Metrix.

Reported net loss applicable to common stockholders for the third quarter, excluding amortization of $8.5 million, was $1.7 million or $0.08 per share, compared to a net loss of $2.1 million or $0.10 per share for the second quarter of 2000, and a net loss of $1.3 million or $0.08 per share for the same period in 1999.

Pro Forma Highlights
Jupiter Media Metrix announced pro forma revenues for the third quarter - reflecting full quarterly results for both Jupiter and Media Metrix - of $38.6 million, a 113 percent increase compared to $18.2 million for the same period in 1999. Revenue growth was driven by a 154 percent increase in Media Metrix and AdRelevance measurement revenues to $14.0 million, a 126 percent increase in Jupiter Research revenues to $16.0 million, and a 56 percent increase in Jupiter Events and Other revenues to $8.6 million. Total contract value, defined as the annualized value of all subscription contracts outstanding at the end of each period, was $113.0 million, an increase of 138 percent versus September 30, 1999.

Pro forma gross margin for the quarter was $24.5 million, or 63 percent, compared to $9.7 million, or 53 percent, for the third quarter in 1999.

Pro forma net loss applicable to common stockholders for the third quarter, excluding amortization, merger related expenses and a loss on a sale of a minority investment, was $507,000 or $0.01 per share, compared to a net loss of $523,000 or $0.02 per share for the same period in 1999.

"This was an exciting and important quarter for our company," said Tod Johnson, chairman and CEO of Jupiter Media Metrix. "We successfully completed our merger to create the definitive provider of Internet measurement, analysis, events and advice. We are extremely pleased with the progress we're making in leveraging the combined assets of our new company to create increased value for our clients. Concurrently, we've continued to focus on our financial objectives and are pleased that our Jupiter Research, Jupiter Events and Media Metrix U.S. audience measurement businesses continue to be profitable on an operating basis, before interest income and amortization. Our strong, proven business model allows us to make the necessary investments in our international operations as we build the highest quality worldwide measurement and information standard for the global Internet economy."

"The complex and dynamic nature of the Internet economy continues to create strong demand for resources that support strategic and critical business decisions," said Gene DeRose, president and COO of Jupiter Media Metrix. "Jupiter Media Metrix provides these vital resources, helping companies compete and implement solutions for today, and plan for tomorrow. We were pleased to welcome more than 280 new subscribers during the quarter, including Sears, StarMedia Network, Duke University, Waddell & Reed and La Poste; and expand relationships with companies like Intel, GE, Adobe, Grey Worldwide and VISA. The diversity of our growing client base, now more than 2,000 strong, and our strong renewal rate - 70% among Jupiter Research subscribers and 95% among Media Metrix subscribers - are proof that the Internet continues to create opportunities and challenges for businesses around the world."

Mr. DeRose added: "The launch of the Jx Intelligence product suite, which leverages Media Metrix and AdRelevance measurement data and Jupiter Research analyst expertise, as well as data from our strategic research partners, is just the first example of how we're working quickly to integrate Jupiter Media Metrix' unmatched resources to deliver unique value to the marketplace."

• The launch of the industry's first audience measurement service in Brazil, expanding Media Metrix' global measurement services to the important Latin American market
• The addition of 18 Jupiter Research analysts, extending coverage and presence in key areas, including financial services, customer service and Europe
• The continued rapid growth of Jupiter Research's B-2-B research services, including the release of the industry's first comprehensive B-2-B advertising and net market infrastructure spending forecasts
• The introduction of AdRelevance 2.0 - integrating advanced web-sampling technology, measuring more than half-a-million URLs, and nearly doubling the number of measured online advertisements from 6,000 to 10,000 per week
• The launch of Jupiter Events' highly successful Global Wireless Forum in Stockholm, and record attendance at three repeat events - Plug.In, Online Advertising and Digital Kids

Mr. Johnson concluded: "Our strong performance this quarter demonstrates that high quality, innovative measurement services, authoritative analyst research and industry leading events continue to be important resources for companies competing in the digital world. Without parallel, Jupiter Media Metrix delivers these resources today."

Management Conference Call and Webcast
Today at 5:00 p.m. EST, Jupiter Media Metrix management will host a conference call and Webcast to discuss its third quarter results as well as its outlook for the fourth quarter and 2001. The company welcomes all members of the financial and media communities to visit the "Investor Relations" area of www.jmm.com to listen to the conference call via live Webcast. The Webcast replay will be available through November 16, 2000.

About Jupiter Media Metrix
Jupiter Media Metrix, formed by the merger of Jupiter Communications and Media Metrix, is a global leader in market intelligence for the new economy. 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.

Forward Looking Statements
This press release contains statements that may constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on the company's current plans and expectations and are subject to risks and uncertainties that could cause such statements to differ materially from actual future events or results. Important factors that could cause Jupiter Media Metrix' actual results to differ materially from those described in a forward-looking statement include, among others, changes in the markets for the company's products and services, increased competition from existing or new competitors, the company's ability to manage its growth and to attract and retain experienced personnel, fluctuations in the company's quarterly and annual operating results, the company's ability to manage the international expansion of its business, risks associated with the integration of acquisitions and general business and economic conditions. Additional information about the risks that may affect Jupiter Media Metrix' business and financial results are discussed in the company's Annual Report on Form 10-K for the year ended December 31, 1999, which was filed with the SEC on March 28, 2000, and the company's quarterly reports on Form 10-Q filed with the SEC. You are encouraged to read this information carefully. Jupiter Media Metrix undertakes no obligation to update any forward-looking statement that may be made from time to time by or on behalf of the company.

Jupiter Media Metrix, Inc.
Pro forma Condensed Consolidated Statement of Operations
(Unaudited, in thousands except for per share data)
	Three Months Ended September 30,		Nine Months Ended September 30,
	2000	1999	2000	1999
Measurement	$13,964	$5,496	$36,786	$12,931
Research Services	16,030	7,106	43,048	16,516
Conferences /Other	8,644	5,555	24,510	10,537
Total Revenues	38,638	18,157	104,344	39,984
Costs of revenues	14,139	8,481	39,117	19,173
Gross profit	24,499	9,676	65,227	20,811
Operating expenses:
Research and development	5,528	1,619	13,408	3,609
Sales and marketing	11,586	5,363	32,351	12,519
General and administration	10,609	4,657	30,392	10,345
Amortization of intangiables (Including other stock based compensation)	30,420	20,973	83,567	62,117
Total operating expenses	58,143	32,612	159,718	88,590
Loss from operations	(33,644)	(22,936)	(94,491)	(67,779)
Minority interest	662	806	2,294	833
Interest income, net	2,055	634	6,788	1,027
Net Loss	(30,927)	(21,496)	(85,409)	(65,919)
Preferred stock dividends	--------	--------	--------	(109)
Net loss applicable to common stockholders	$(30,927)	$(21,496)	$(85,409)	$(66,028)
Weighted average shares outstanding	34,793	32,292	34,730	30,478
Net loss per share applicable to common stockholders	$(0.89)	$(0.67)	$(2.46)	$(2.17)
Net loss applicable to common stockholders excluding charges related to amortization of intangibles and stock based compensation	$(507)	$(523)	$( 1,842)	$(3,911)
Net loss per share applicable to common stockholders excluding charges related to amortization of intangibles and stock based compensation	$(0.01)	$(0.02)	$(0.05)	$(0.13)

Jupiter Media Metrix, Inc.
Condensed Consolidated Balance Sheet
(Unaudited, in thousands)
	September 30, 2000	December 31, 1999
Current assets:
Cash and short term investments	$126,138	$112,241
Accounts receivable, net	29,583	5,993
Prepaid expenses and other	6,804	454
Total current assets	162,525	118,688
Property and equipment, net	31,424	5,308
Intangibles, net	485,776	52,948
Minority interests	309	1,617
Total assets	$687,031	$178,844
Current liabilities:
Accounts payable and accrued liabilities	$39,288	$10,560
Advance billings	43,049	5,126
Other current liabilities	712	196
Total current liabilities	83,049	15,882
Deferred Rent	1,121	-
Long-term debt	18	173
Total stockholders' equity	602,843	162,789
Total liabilities and stockholders' equity	$687,031	$178,844