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GfK KnowledgePanel is a scam - thespecter.net
What is GfK KnowledgePanel? GfK is a market research company that mails envelopes to the homes of consumers, and the envelopes contain a $2 and a letter telling the ‘chosen’ that your household has been randomly selected to perform short market research surveys, a la the Nielsen ratings. You receive an email when a new … Continue reading GfK KnowledgePanel is a scam