Startup Idea : A Review Website targeting B2B Market

As many people are aware of the website glasdoor.in, which provides reviews mainly from the employees who have worked or are currently working. The new applicants can look at the review before joining the company . Same way, we can also create a website for B2B customers where in an existing supplier can rate the purchaser on basis payment(if the payments are cleared on time) or how is the companies policy, likewise, purchaser can rate the seller in terms of faulty material and also deadline problems.