ChannelAdvisor Kicks Off 2010 with Multichannel Growth

Company reports 261 new customer additions, key new product features and continued expansion

RESEARCH TRIANGLE PARK, North Carolina, April 26, 2010 - ChannelAdvisor, a solution provider that enables online retailers to
improve efficiency and increase revenue, today announced that its retailers
have jump-started 2010 with record growth on Amazon, incremental growth on
eBay and overall growth across all channels this quarter. Boasting 124 of
Internet Retailer's Top 500, ChannelAdvisor added notable new retailers
including GolfEtail, Replay Photos, Ritz Camera, The Sharper Image,
ValuePetSupplies, Wine Enthusiast and in the United Kingdom Joe Browns,
Republic Retail and Speedo.

ChannelAdvisor's online retailers continued to see tremendous growth
across the marketplaces channel this quarter, experiencing Amazon
same-store-sales growth of 75 percent, and incremental eBay same-store-sales
growth of five percent. Across all ChannelAdvisor channels, including
marketplaces, comparison shopping, paid search and stores, retailers
experienced a healthy 14 percent growth this quarter.

"ChannelAdvisor helps retailers sell more online as evidenced this
quarter by the record-breaking success of our retailers on Amazon, an
achievement in line with and even ahead of Amazon's impressive company
growth," said Scot Wingo, ChannelAdvisor CEO. "As shoppers loosen their
wallets and increase spending online, we're expecting 2010 to continue to be
a banner year for ChannelAdvisor and our retailers."

This past quarter ChannelAdvisor also became part of the inaugural
Demandware LINK Community program, a partnership program giving current
Demandware customers access to the ChannelAdvisor platform including the
ability to list products across more than 115 comparison shopping engines,
increasing product visibility and access to new audiences.

"We're looking forward to extending our online presence with the
assistance of ChannelAdvisor," said Paul McDermott, head of e-commerce for
Speedo International. "There is significant opportunity for Speedo in online
marketplaces, and we're confident ChannelAdvisor's solution will allow us to
tap into that market."

Additional noteworthy product updates this past quarter included the
following:

    - Marketplaces
      - Support for eBay's spring update, namely eBay Motors parts and
        accessories (fitment)
      - Expansion of support for eBay variations
      - Increased category support for Amazon, including automotive
        accessories
      - Amazon Categorizer and Product Match functionality for the UK
    - Paid Search
      - Creative Reporting that tracks ad creative performance for Google,
        Bing and Yahoo!
      - Social media tracking that measures clicks and revenue generated from
        social media sites such as Facebook and Twitter
    - Comparison Shopping Engines
      - Support for Google Product Extensions and the Google Affiliate
        Network within the Google Product Search data feed
      - Increased support from 92 to more than 115 providers worldwide

In other first quarter highlights, ChannelAdvisor continued to expand its
workforce with 30 new hires. The company plans continued global workforce
expansion in sales, marketing, engineering and support.

About ChannelAdvisor

ChannelAdvisor helps the world sell more online with applications that
enable retailers to efficiently distribute their products across multiple
online channels, drive shoppers to those products and then convert those
shoppers into customers. The ChannelAdvisor platform empowers retailers to
distribute their products across multiple online marketplaces, comparison
shopping sites and search engines. With application features such as keyword
generation, in-depth reporting, and a merchandising engine, retailers gain
the solutions they need to easily fine-tune and analyze their marketing
efforts to drive more shoppers to their products. ChannelAdvisor's rich media
offerings and storefront applications enable retailers to provide an engaging
online shopping experience that represents their brand and is optimized to
convert shoppers into buyers. In 2009, ChannelAdvisor managed US$2.6 billion
in gross merchandise value (GMV) on behalf of leading retailers around the
world including Saks, Dell, Brookstone and GSI Commerce. ChannelAdvisor is
headquartered in Research Triangle Park, NC with offices in Atlanta, Seattle,
New York, the United Kingdom, Australia, Ireland and Germany. For further
information, visit www.channeladvisor.com.

Delisa Reavis, ChannelAdvisor, delisa.reavis at channeladvisor.com, +1-919-636-0659