Wirefly Wins Prestigious 2005 Keynote Web Performance Award for Best in Overall Customer Experience

    /24-7PressRelease/ - WASHINGTON, DC, November 17, 2005 - InPhonic, Inc. (Nasdaq: INPC), a leading online seller of wireless phones and service plans today announced that its popular one-stop comparison shopping site, Wirefly (http://www.wirefly.com) was named "Best in Overall Customer Experience" for wireless providers by Keynote Systems (Nasdaq: KEYN), The Internet Performance Authority and the worldwide leader in services that improve online business performance and communications technologies.

In a press release issued today, Keynote announced the winners of the 2005 Keynote Performance Awards, an awards program designed to recognize and honor top performers across a broad range of vertical industries for consistent online transaction performance and excellence in Web site performance. This year's other award winners include E*TRADE FINANCIAL, Amazon, Apple, Google, Expedia, Wachovia, Marriott, and more.

Keynote's competitive intelligence customer experience studies of leading industries rely on actual user behavior and feedback to benchmark the customer experience and its impact on brand and conversion. Study results are based on the evaluation of more than 250 metrics from thousands of participants as they interact with the sites included in a particular study. Keynote Performance Awards were presented for "Best Overall Customer Experience" in several industry categories, including Airline, Auto Insurance, Banking, Brokerage, Wireless, and more.

"Keynote congratulates the winners of this year's Keynote Performance Awards. Each has every reason to feel proud of providing such consistently outstanding customer experience on complex Web sites," said Vik Chaudhary, vice president of marketing and corporate development at Keynote. "All the companies included in Keynote indices and studies are premier companies who pay strict attention to both service levels and customer experience. To wind up at the top of that list, therefore is a great achievement."

"We are honored with Keynote's 2005 award for Best Overall Customer experience." said David A. Steinberg, Chairman and CEO of InPhonic and Wirefly. "We are very committed to ensuring the finest experience for online shoppers and this award further validates InPhonic's dedication to customer satisfaction and service."

For more information about Keynote's Performance Awards visit:

http://www.keynote.com/news_events/performance_awards.html

To learn more about the methodology of Keynote Competitive Intelligence studies, visit:
http://www.keynote.com/solutions/ci_howItWorks.html

About Keynote

Founded in 1995, Keynote Systems (Nasdaq "KEYN") is the worldwide leader in services that improve online business performance and communications technologies. Keynote helps approximately 2,300 corporate customers and 13,000 individual subscribers become "the best of the best" online. The business premise supporting Keynote's mission is: "Online businesses can't manage what they don't measure." As an independent and trusted third-party, Keynote provides IT and marketing executives with unbiased benchmarking data, competitive analysis and operational metrics from the customer perspective. This data measures service levels and customer experience of Web sites, broadband services and mobile communications.
Known as The Internet Performance Authority , Keynote manages a market-leading infrastructure of 1,600+ measurement computers and mobile devices in over 114 locations and 66+ metropolitan areas worldwide that assess service levels and a panel of over 160,000 consumers who participate in interactive Web site tests that assess user experience. These online user experience tests capture customer attitude and behavior to answer the critical "why" behind the "what." Keynote's geographically distributed measurement services, on-site monitoring appliances, competitive intelligence and custom studies ensure that its customers outpace their competitors in online service levels and overall user experience.

Keynote Systems, Inc. is headquartered in San Mateo, California and can be reached at http://www.keynote.com or by phone in the U.S. at 650-403-2400. Keynote, The Internet Performance Authority and Perspective are registered trademarks of Keynote Systems, Inc. Other trademarks are the property of their respective owners. 2005 Keynote Systems, Inc.

About InPhonic and Wirefly

Headquartered in Washington, D.C., InPhonic, Inc. (NASDAQ: INPC) is a leading online seller of wireless services and products. InPhonic sells these services and devices, and provides world-class customer service through websites that it creates and manages for online businesses, national retailers, member-based organizations and associations under their own brands. InPhonic also operates Wirefly (www.wirefly.com), a leading mobile phones and wireless plans comparison site that was awarded "Best of the Web" by Forbes magazine in 2004. InPhonic also delivers a full range of mobility solutions to enterprise clients through its Mobile Virtual Network Enablement (MVNE) platform. In 2004, InPhonic was selected #1 company of the year on the Inc. 500 - Inc. Magazine's list of the fastest-growing privately held companies in the United States. More recently, InPhonic was named T-Mobile's Internet Partner of the Year for 2004. For more information on the company, its products and services, visit the InPhonic Corporate Web site at http://www.inphonic.com.

"Safe Harbor" Statement - Under the Private Securities Litigation Reform Act of 1995, this press release may contain forward-looking statements that involve risks and uncertainties, including uncertainty as to whether or when the definitive agreement relating to the sale of Liberty Wireless will be signed and closed. Important factors, which could cause actual operating results to differ materially from those in the forward-looking statements, are detailed in filings with the Securities and Exchange Commission made from time to time by the Company. This press release and statements are current as of the date of the individual announcements and the Company undertakes no obligation to publicly release any revisions to any forward-looking statement to reflect events or circumstances after the date thereof or to reflect the occurrence of unanticipated events.

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