Writing post-publication reviews is a good way to demonstrate your expertise and writing them on Publons is a great way to bring this expertise to the attention of the authors, other reviewers, and editors.
You can also use your Publons profile to cross-post post-publication reviews you've written elsewhere. Simply add them through the forms on the site. We don't currently offer a way to link them to their original place of publication but you can add a link within the review's content.Also note that you can gain Publons Merit for your post-publication reviews. You can read more about the Publons Merit System here: What is Publons Merit?