The revised Guides specify that while decisions will be reached on a case-by-case basis, the post of a blogger who receives cash or in-kind payment to review a product is considered an endorsement. Thus, bloggers who make an endorsement must disclose the material connections they share with the seller of the product or service.
The relevance to many photography related blogs is obvious, as is the relevance to the previous discussion here under the subject "Who Pays?".
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