Easy to use and effective!
I've been Yotpo for a while now and I receive reviews regularly on my website. i think it really helps with conversion as people (myself included!) often like a product but end up buying it due to the reviews it's received. What makes Yotpo great, is that it's easy to use for me, and easy to use for the customer too! My only gripe is that being a small business, it's not feasible to be able to pay a monthly fee for extras - but the free version does everything I need it to.