Why not just a five-star rating?
The customer feedback you see on e-commerce sites has permanently changed the way the modern world shops for goods and services. Before you give your hard earned cash to someone, don’t you check the customer reviews and read a few of the five stars and also a few of the one stars to find out if what causes others to be so dissatisfied will leave you feeling the same way?
News is not that simple. Seeing that a coffee mug shows up smashed in shipping 60% of the time is easy to make a buying decision. But information is far more complex than a coffee mug. Scoring allows you to pick the metric you want to score, and grade that metric specifically. Is something overly conservative, totally opinion based, factually incorrect, or excessively sesquipedalian? Score them ALL!