Personally I do not want to know the hottest deals, I want to be aware of the new deals which are heating up super fast, before they are gone!! Is it possible for you to add how quickly the temp is increasing or decreasing per hour (for example)?!! These are the ones I want on my top 5!
e.g if a deal is 48 degrees after 2 days, then d(heat)/dt is about 2, whereas if it is 48 degrees after 3 hours, d(heat)/dt is about 16 which is a much better deal!
Should be easy to implement too.