ChannelAdvisor Ranks as Top Vendor to IR 500 for Marketplaces, Comparison Shopping, Paid Search and Rich Media.

E-Commerce Solution Provider Powers 5 of the Top 10 Online Retailers

RESEARCH TRIANGLE PARK, N.C. -- ChannelAdvisor, a global e-commerce platform provider that enables retailers to sell more across online channels, announced today that it is the vendor listed the most by retailers for the Marketplaces and the Comparison Shopping Engine channels for the 2011 Internet Retailer Top 500 Guide, which ranks the 500 largest web merchants in North America based on annual web sales. ChannelAdvisor is also listed by retailers as the second highest for Paid Search and third highest for Rich Media.

"ChannelAdvisor is quickly becoming the standard for the world's top e-commerce brands," said ChannelAdvisor President and Chief Operating Officer David Spitz. "We've invested heavily in our platform and our people over the last decade, earning us the most comprehensive e-commerce solution on the market. We take great pride in the fact that every component of our platform was awarded this year as best in class. We now power half of the IR 500 top 10 and 30 percent of the top 100, and we're honored to be trusted by the top brands in retail."

ChannelAdvisor powers more than 3,000 retailers globally including some of the largest, most successful retail brands such as Dell, Victoria's Secret, Under Armour, Staples, Crocs, Bed, Bath & Beyond, Jos. A. Bank, Urban Outfitters and more.

* For Comparison Shopping Engines, ChannelAdvisor powers 50 percent more of the IR 500 retailers than the next vendor and is even more commonly used than in-house solutions

* For Marketplaces, ChannelAdvisor supports four times as many retailers as the next vendor

To find out more about the leading vendor to the IR 500, please visit http://www.channeladvisor.com.

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About ChannelAdvisor

ChannelAdvisor is a global e-commerce platform provider that helps retailers sell more online through channels such as marketplaces, paid search and comparison shopping, and with webstores and rich media solutions. Widely respected as a trusted advisor for more than 3,000 top e-commerce brands, ChannelAdvisor calms the chaos of online selling by enabling retailers to submit one inventory feed to the ChannelAdvisor platform where it is translated to fit the specifications of hundreds of e-commerce channels and distributed accordingly. In 2010, ChannelAdvisor managed $2.8 billion in gross merchandise value (GMV) on behalf of retailers of all sizes including Saks, Dell, Brookstone, and more than 30 percent of the Internet Retailer Top 500 online retailers. ChannelAdvisor is headquartered in Research Triangle Park, NC, with offices in New York, Seattle, Australia, Ireland, Germany and the United Kingdom. For further information, visit www.channeladvisor.com.