If your business actually compensates endorsers or product
reviewers with cash, gift certificates, coupons, free products, etc. in
exchange for their endorsements or positive reviews, this must be
disclosed!
The FTC is the watchdog over businesses engaged in
interstate commerce including online businesses. The revised FTC
guidelines state that if a connection exists between the maker/provider
of some good or service and another person that provides a positive
review or endorsement about such good or service that would materially
affect the endorser's credibility in the eyes of the reasonable consumer
(i.e. a "material connection"), this connection must be disclosed. This
applies if the endorser is either not known to the general public or is
not held out to be an "expert"....