@Hose_jam said:

What's the reason for a "thumbs down" icon? It just creates negativity when it has no place in rating whether you liked a jam or not. And especially since these are all coming from the same tour and are part of a "best of" list, it's hardly believable that people would actively dislike one of these jams.

I think rating the jams is a fun activity but adding in the negative ratings is unnecessary.

I'm pretty sure the thumbs down is to move the particular jam up and down on the rankings, and not necessarily a referendum on the jam itself.