BtoB

Top B2B Web sites

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Rank December*Rank November* Web site Unique visitors in a month in millions**
14QuillCorp.com12.8
21Uclick.com10.6
38Office.com 9.1
45Onvia.com 7.7
53Intranets.com 6.2
69eFax.com 5.9
710Learn2.com 4.3
818ShopNow.com* 3.9
917DigitalRiver.com 3.9
106MailOrderCentral.com 3.8
11 12InfoNow.net 3.6
12 26 Concentric.net 3.5
13 15 Vicinity.com 3.3
14 27 RealNetworks.com 3.3
15N/A Consonus.com 3.2

**Represents an aggregation of commonly owned/branded domain names.

**Average unique pages per visitor in a month: The average of the sum of the number of unique pages viewed per day over the course of the month by those persons visiting a specific Web site or category, channel or application. Unique visitors: The number of total users who visited the reported Web site or online property at least once in the given month. Unique visitors are unduplicated.

Source: Media Metrix

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