Commercial Truck Trader Drives Customers from Web to Phone with eStara Click to Call Technology.

Leading Commercial Truck Marketplace Immediately Connects Truck Dealers and Customers for Increased Sales

CAMBRIDGE, Mass. -- ATG (Art Technology Group, Inc., NASDAQ: ARTG), the leading e-commerce platform and optimization services provider, today announced that Commercial Truck Trader, online and print marketplace for commercial and work truck classified advertisements, has introduced enhanced calling capabilities for its advertisers based on ATG's eStara Click to Call service.

"Commercial Truck Trader has the largest online inventory of more than 100,000 trucks and trailers and we want to deliver the necessary tools to connect truck sellers and buyers to ensure a complete sales cycle," said Mark Bondi, brand manager of Commercial Truck Trader. "eStara Click to Call gives us an advantage over other resources and provides dealers the technology for a personalized customer experience to secure increased sales."

After a sluggish 2007, commercial truck sales are expected to experience a slow recovery after the first quarter of 2008, according the National Truck Equipment Association (NTEA). Truck dealers are looking to technology as a way to better compete for this limited growth opportunity and provide added value to their customers. Commercial Truck Trader employs eStara's Click to Call as a way to differentiate itself in a highly competitive cross channel industry.

CommercialTruckTrader.com provides drivers and businesses involved in the trucking industry the ability to search online or sell light - medium- and heavy-duty commercial vehicles. eStara Click to Call helps transition potential truck buyers on CommercialTruckTrader.com from the research phase to a purchase by providing consistent cross channel experience. eStara Click to Call creates an easy shift from Web to the phone and allows dealers to engage customers and connect with them using real-time information about the caller, including data detailing the point during the transaction the shopper decided to make a call, encouraging a much more personalized sales experience.

eStara Click to Call delivers to Commercial Truck Traders' nationwide network of more than 3,800 dealerships a seamless hand-off from the Web to the phone, and a variety of features that help increase sales conversions, reduce Web site abandonment and improve customer experience, including the ability to:

* Leverage business rules to target high-value customers

* View customer data in real-time to minimize call handle times

* Route calls dynamically based on customer need or caller location

"Publishers are looking for new ways to maintain their edge and enhancing online classified listings with technologies like eStara Click to Call not only differentiates services, but helps them cater to the unique needs of their audience," said Shari Solis, vice president, media at eStara. "eStara Click to Call provides the ability to connect with customers in a meaningful way online, where in the past a dealers may have missed an opportunity to engage them at an essential point in the buying process."

About Commercial Truck Trader

CommercialTruckTrader.com is owned and operated by Dominion Enterprises. Formed in 1991, Dominion Enterprises is the nation's leading publisher of specialty classified advertising publications, including over 750 paid and free magazines such as Auto Trader, For Rent, Harmon Homes and The Employment Guide. Dedicated to satisfying consumer demand for efficient targeted advertising, these magazines are complemented by their more than 40 market leading Internet sites (Traderonline.com, ForRent.com, Homes.com and Roomsaver.com), each designed to serve a specific category like the automotive, specialty vehicle, apartment rental, homes for sale, employment and lodging segments. It also provides website hosting services for over 12,000 real estate agents, car dealers, and other specialty vehicle businesses. With over 335,000 outlets, it boasts the largest paid and free distribution publication network across the U.S.; and it operates 11 regional printing plants. Dominion Enterprises' over 10,000 employees serve its customers through offices in most major cities in 47 states.

About Dominion Enterprises

Dominion Enterprises, a division of Landmark Communications, is a leading marketing services company serving the automotive, real estate, apartment, recruitment and marine markets. The company operates a variety of businesses that offer Internet marketing, Web site design and hosting, lead generation, CRM, and data capture and distribution services. The company has more than 40 market-leading Web sites reaching more than 12.5 million unique monthly visitors, and more than 500 magazines with a weekly circulation of over 5 million. Headquartered in Norfolk, Va., the company has nearly 6,000 employees nationwide and annualized revenue of more than $946 million. For more information, visit http://www.DominionEnterprises.com.

About ATG

ATG (Art Technology Group, Inc.) provides the e-commerce platform and e-commerce optimization services that the world's most customer-conscious companies use to power their e-commerce Web sites, attract prospects, convert them to buyers and ensure their satisfaction so they become loyal, repeat, profitable customers. Our e-commerce suite is ranked the #1 current offering and #1 in strategy by the industry's most influential analyst firms, and powers more of the top 300 internet retailers than any other vendor. Our eStara brand of e-commerce optimization services - including the world's most widely used click to call offering - dramatically increase conversions and order size and enhance customer support. ATG's solutions are used by over 900 major brands, including AT&T, Best Buy, Bulgari, Coca Cola, Continental Airlines, CVS, Dell, Diane von Furstenberg, DirecTV, eLuxury, El Corte Ingles, Expedia, France Telecom, Harvard Business School Publishing, Hewlett-Packard, Hilton, HSBC, Intuit, Jenny Craig, Louis Vuitton, Macy's, Mercedes Benz, Meredith, Microsoft, Neiman Marcus, New York & Company, NutriSystem, OfficeMax, PayPal, Philips, Procter & Gamble, Sears, Sony, Symantec, Target, T-Mobile, Tommy Hilfiger, Urban Outfitters, Verizon, Viacom, Vodafone and Walgreens.

This press release contains forward-looking statements for purposes of the safe harbor provisions under The Private Securities Litigation Reform Act of 1995. Further details on these risks are set forth in ATG's filings with the Securities and Exchange Commission. These filings are available free of charge on a website maintained by the SEC at http://www.sec.gov. Additional risk factors related to the subject matter of this press release include: the possibility that eStara's product and service deployments will not be successful, on time or significantly enhance the user's Internet experience; the need to adapt to rapid changes so products and services do not become obsolete; the possibility of errors in eStara's software products and services; the possibility that eStara's offerings will not enhance its customers' online sales or otherwise provide the expected benefits to its customers; and the possibility that eStara's product strategy may change in the future. eStara and ATG undertake no obligation to update any of the forward-looking statements after the date of this press release.