Using testimonials on your site (the right way) is always beneficial, whether your goal is more sales, or more subscribers, etc. Providing social proof that your product or blog is awesome will help convince people that giving your their money or time is worth their while. While you can certainly use written testimonials, video testimonials …Read: "Ask Yoast: How to use video testimonials?"
Testimonials are of great value to your site. You can use them to increase the trust of potential customers, if you put them someplace people can find them. Using testimonials right can help you with your branding and will also be beneficial if you’re running a local business. Here, you’ll find all the ins and outs of getting and using testimonials & reviews to your advantage!