The answer is: " online direct marketing model " .
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" According to the online direct marketing model , an organization can [increase brand awareness} or even {generate sales] by 'web-based word-of-mouth marketing' or 'promoting a product or service to other people' . "
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{Note that: "web-based word-of-mouth marketing" is also known as:
"[web-based] buzz marketing .} " .
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