InsightExpress (www.insightexpress.com) - InsightExpress is the acknowledged pioneer of rapid turnaround, high-quality, online market research services. With its award-winning and patented technology, market research expertise, and access to more than 100 million online individuals, InsightExpress enables its clients to easily harness market research to make the right business decision in real time.

Internet Advertising Bureau - first global association devoted exclusively to maximizing the use and effectiveness of advertising on the Internet

100hot - Web21 compiles this objective, complete listing of the top 100 web sites by analyzing web traffic at strategic points on the Internet.

BPA Interactive - provides accurate, independent, third-party verification of Web site traffic, ad impressions and click-through rates. Importantly, BPA is the only not-for-profit Web auditing firm

eMarketer - eMarketer's mission is to show you exactly "how-to" build, promote and maintain a successful web business site

Greenfield Online, Inc. - marketing research company specializing in online studies about Internet activities, e-commerce and traditional marketing research topics for media, consumer product, telecommunications, technology, and financial services companies.

Jupiter Communications - provides market research on the consumer online industry

Media Metrix - the pioneer and leader in new media and technology measurement services joins forces with the first company to provide national audience projections for the World Wide Web to help advertisers, agencies and site publishers more accurately track Web usage and target advertising

NetValue - NetValue is a global panel-based Internet usage measurement system. NetValue provides an integrated view of how the Internet is used from a directly-observed consumer perspective into how the Web, chat, e-mail, instant messaging, streaming media (and all the other Internet applications) fit into the usage patterns of consumers.

Nielsen NetRatings - a Web audience measurement firm focused on serving media planners, advertisers, marketers and publishers who need authenticated data about online user behavior to make well-informed marketing decisions.

The Advertising Media Internet Center - practical information for advertising professionals

MediaFinder (Oxbridge) - lists over 100,000 Publications and Catalogs

Arbitron - international media research firm, provides information services that are used to develop the local marketing strategies of the electronic media, and of their advertisers and agencies

Nielsen Media Research - the leading provider of television information services in the U.S. and Canada, serving national and local customers including television networks and affiliates, independent stations, syndicators, cable networks, cable systems, advertisers and their agencies

Spot Quotations And Data (SQAD) - publishes a monthly report of quarterly spot TV cost-per-point projections

Mediamark Research, Inc. (MRI) - offers comprehensive demographic, lifestyle, product usage and exposure to all forms of advertising media collected from a single sample

Public Service Advertising Research Center - an on-line information library dedicated to the field of public service advertising

Scarborough - the nation's leading provider of local market consumer information

USADATA.com - organizes and facilitates access to a wide variety of subscription marketing databases specifically for marketing, sales and planning professionals

Simmons Market Research Bureau - offers a power mix of marketing and media data to take marketers beyond the world of demographics and into the complex realm of attitudinal and behavioral consumer research

Competitive Media Reporting (CMR) - experienced provider of advertising occurrence and expenditure data to advertising agencies, advertisers, broadcasters and publishers

MediaStart - offers magazine media kits online -- the unprecedented ability to quickly compare hundreds of magazines by category, circulation, and cost-per-thousand

SRDS - serves the media industry by delivering current, comprehensive media and marketing information about traditional and alternative advertising opportunities, both in the US and worldwide. Several SRDS resources are now available to subscribers in print and online at www.srds.com.