Linking Likes to reviews

"If you run a promotion to get people to Like your brand they’ll most likely Like the brand to get a promo code and then click UnLike or not engage with your brand,” he says. “If you acquire a consumer after they’ve written a review, they’re already engaged with your brand.”

參考來源：

"and then click UnLike or not engage with your brand,” he says. “If you acquire a consumer after they’ve written a review, they’re already engaged with your brand.”"
- Marketing Technology - Linking Likes to reviews - Internet Retailer (在「Google 網頁註解」中檢視)