During these activities, users are likely to devote significant attention to a single site, but in some cases (such as comparison shopping), they are also likely to bounce around among several sites.

在这些活动中，使用者可能会全神贯注地关注一个网站。但在有些情况下(比如比较商品时)，他们通常也会在几个网站间跳来跳去。

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Actually, there are next-gen comparison shopping sites hitting the Net.

FORBES: Magazine Article

Instead, antitrust agencies around the globe have fixated on helping middlemen comparison-shopping sites such as Nextag and PriceGrabber, most of whom charge retailers for listings.

FORBES: Who Competes With Google Search? Just Amazon, Apple And Facebook

Tancer is even working with researchers at Stanford to explore a new consumer confidence estimate based on search terms like "gas prices" and visits to thrifty comparison-shopping sites, which have climbed in response to this year's economic pain.

FORBES: Magazine Article