I've found that Steam reviews are especially useless for visual novels and games with anime girls. I am open to the concept of a visual novel, and really enjoy the Ace Attorney games, but maintain 99.9% of them are trash, with none of their excess dialog trimmed down. They all have reviews saying Overwhelmingly Positive though, because anyone who would take the chance to try that genre - a small segment of people - will enjoy it.

I also really wish Steam would implement a Helpfulness system for Guides, since most games have Guide pages that are just filled with meme posts, eg; "How 2 win: Pick OP character, enjoy victory".