Very useful but not without it's limitations. I would love the ability to have customers upload photos of their purchases. It would also be great (since this is a Shopify-owned app) to have it integrated with the purchasing process. Allow for a follow up email so customers can leave feedback on their purchase without having to find the correct item on the website. as it stands there are too many steps and barriers to access that allow for a more streamlined and conversion-friendly user experience.