Which of the following is a word-of-mouth method by which customers promote a product or service by telling others about it?

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Viral marketing is a word-of-mouth method where customers promote a product or service by telling others about it. Vortal commerce refers to the integration of e-commerce and vertical portals. Social expression is a term used to refer to the way individuals use social media to express themselves. Branded commerce is a term used to refer to e-commerce businesses that sell only their own branded products.

Which of the Following Is a Word-Of-Mouth Method by Which