There is no better publicity than the one provided directly by your customers. Allow your clients to post reviews about your fast-food or pizzeria directly on your online ordering website.
How can my customers leave reviews? If a customer orders from your website they can add their opinions about your service on your website. There is a special “Customer Reviews” area, especially for customer feedback. Not only you can thank them through messages and coupons, but now they can pay you back and inform you about what is great in your business and what could use a bit of improvement.