CONCORD, Mass. – June 28, 2004 – OneSource Information Services, Inc., an infoUSA company, (Nasdaq: IUSA), and leading provider of business information solutions, today announced the appointment of Yvonne Cekel as President. In her new role, Ms. Cekel will be responsible for the strategic direction and overall operations of the company. Under her leadership, OneSource, which will be part of infoUSA’s Donnelley Group, will leverage the resources of infoUSA to extend its high-value information services.

With more than 20 years of sales and marketing experience, Ms. Cekel has been a OneSource executive team member since joining the company in 2002. Ms. Cekel has been responsible for directing and developing corporate and product strategy, building and managing worldwide marketing, and expanding business partner programs.

“During her tenure at OneSource and in previous engagements, Yvonne has demonstrated outstanding insight into products and markets,” said Ray Butkus, president of the Donnelley Group of infoUSA. “As we position OneSource for a new growth phase, we want Yvonne’s skills and judgment to guide the way. She knows the OneSource business very well, and is the perfect choice to blend infoUSA’s far-reaching information assets with OneSource’s other content providers and software applications. The result will be an even stronger set of business information solutions for customers worldwide.”

Prior to joining OneSource, Ms. Cekel held executive positions at Transparent Language, Channel Computing and Cadre Technologies, and also served as a strategy and business development consultant for several other technology companies. Ms. Cekel, received her MBA from Harvard Business School and BS/BA from Babson College, and is a Certified Public Accountant.

“With infoUSA, OneSource now has a wide array of strategic resources that we will apply directly to address our customers’ business challenges,” said Ms. Cekel. “We now have direct access to a large amount of data on companies and executives, and this will have a substantial impact on our ability to create compelling new information products and embedded information solutions. OneSource and infoUSA are both known as quality leaders, and together we can go further than ever to provide accurate, timely, and complete information. I look forward to maximizing the opportunities we have in front of us.”

The OneSource® Business Browser^SM product line, Synergy^SM Solutions and Catalyst^SM modules integrate business information from over 1.7 million public and private companies and are based on the company’s proprietary Global Business Taxonomy™ system for organizing and interconnecting business information. As a result of using OneSource products, sales and marketing executives are better prepared to strategically target accounts, understand their customers’ business initiatives and challenges, and monitor sales opportunities and risks.

About infoUSA Inc.
infoUSA (www.infoUSA.com), founded in 1972, is the leading provider of business and consumer information products, database marketing services, data processing services and sales and marketing solutions. Content is the essential ingredient in every marketing program, and infoUSA has the most comprehensive data in the industry, and is the only company to own a proprietary database of 250 million consumers and 14 million businesses under one roof. The infoUSA database powers the directory services of the top Internet traffic-generating sites, including Yahoo! (Nasdaq:YHOO) and America Online (NYSE:TWX). Nearly 3 million customers use infoUSA''s products and services to find new customers, grow their sales, and for other direct marketing, telemarketing, customer analysis and credit reference purposes. infoUSA headquarters are located at 5711 S. 86th Circle, Omaha, NE 68127 and infoUSA''s management can be contacted at (402) 593-4500.

About OneSource Information Services, Inc.
OneSource, an infoUSA company and a recognized leader in business information solutions, delivers unparalleled company, executive, and industry intelligence that makes business professionals more effective and productive in completing their critical daily tasks. OneSource products and services support a company''s vital business processes including serving their customers, finding and leveraging new opportunities, and managing suppliers and partners.

OneSource combines and organizes content from over 2,500 information sources supplied by more than 35 world-class content providers, creating an unequalled information resource encompassing corporate families, industries, executives, financials, news, analyst reports, and trade and business press articles.

OneSource is headquartered in Concord, MA, with offices located in North America, Europe, and the Pacific Rim. Product information is available at www.onesource.com. Customers include Bank One, Chubb, Citigroup, Deloitte & Touche, HP, i2 Technologies, Orange, Royal & SunAlliance, SAS Institute, and Sun Microsystems.

OneSource, Business Browser, Synergy, Catalyst, Global Business Taxonomy, and/or other OneSource product and service names referenced herein are either trademarks or service marks or registered trademarks or service marks of OneSource Information Services, Inc. or its subsidiaries in the United States and/or other countries. All other product and service names mentioned herein are trademarks or service marks of their respective owners.

Forward-Looking Statements
Statements in this announcement regarding infoUSA other than historical data and information constitute forward-looking statements that involve risks and uncertainties that could cause actual results to differ materially from those stated or implied by such forward-looking statements. Such statements include, but are not limited to, those regarding Ms. Cekel’s responsibilities; OneSource’s ability to leverage the resources of infoUSA and the resulting impact on the creation of new products and solutions; the blending of infoUSA’s assets with OneSource’s other content providers and software applications; resulting business information solutions; and the functionality and effectiveness of OneSource products. Because such statements involve risks and uncertainties, actual actions and strategies and the timing and expected results thereof may differ materially from those expressed or implied by such forward-looking statements, and infoUSA’s future results, performance, or achievements could differ materially from those expressed in, or implied by, any such forward-looking statements. Risks, uncertainties, assumptions, and factors that could affect infoUSA’s business and financial results are described in infoUSA’s recent filings with the United States Securities and Exchange Commission including its most recent Form 10-Q.