When it comes to ranking a website for targeted keywords, I don’t judge others how they achieve that goal. After all, it’s not about breaking the law. Rather, it has to do with trying to fool Google. Is it worth the risk of getting your website blacklisted or penalized? That’s the main question that needs to be asked.
Having researched all of these six plugins (WP Product Review Pro, All in One Schema Rich Snippets, WP Review Pro, Rich Reviews, WP Customer Reviews, Site Reviews), I can definitely vouch for one of them. Site Reviews may have a small install base, but as a free plugin, it is a great way to collect reviews and display them as a combined rich snippet. Normally, I would dismiss reviews on a company’s own website, but the benefits of having an attractive review schema displayed on that page in Google should not be ignored.