This beautifully describes a big problem/pain that when people want to buy something they know little about, they have to use other cues, then those cues become

This beautifully describes a big problem/pain that when people want to buy something they know little about, they have to use other cues, then those cues become more important then the product itself. Maybe it can be solved with a PageRank algorithm, but for upvotes/downvotes?