The feature is simple. We introduced a scale of 1-10 stars that a topic can get based on how many times a topic is mentioned. It’s a “site global” scale, which means that the rating is based on comparing a topic to all the other topics we monitor. The most mentioned topic will get 10 stars and stars will be awarded to other topics compared to this topic.
The scale is logarithmic just like the well-known Richter magnitude scale for earthquakes and can be seen as a measure of impact of a topic.
The least mentioned topics will get just 1 star. All numbers are based on the latest whole day based on Coordinated Universal Time (UTC).