Leading Word-of-Mouth Service Providers

BzzAgent: In 2007, 630,000 agents reached 34 million consumers, according to the company.

House Party: The company claims that an event of 1,000 parties draws in more than 15,000 fans directly and more than a million relevant consumers virtually.

Communispace: A site of 300 online customer communities.

SheSpeaks: SheSpeaks has 100,000 members who have a reach of 12 million consumers through their personal networks.