A review endorsement should indicate that you think a review is particularly significant or worth commending.  Reviews with two endorsements will receive DOIs minted by Publons.  Reviews can be endorsed from the review detail page (e.g. https://publons.com/review/10/) by clicking on the “+” icon in the “Endorsed by” section.  Similarly, you may remove your endorsement by clicking on your profile picture from that page, or from the “My endorsements” page of your private dashboard.

See also: