Thanks to modern technologies, like the Internet, the customer reviews have gained a lot of importance for companies and they aim to receive good feedback from them. For example, when you are going to buy something on Amazon, would you buy a 1-star item or a 5-star one? Some companies have even hired people to write good reviews for their products online. So, instant communication and sales for customers is one of the most important factors when rating a product or a company because it shows: (1) Businesses can be available for customers 24 hours a day. (2) Customers can purchase goods and services online. and (3) Customers can give feedback to producers instantly