Good point about niche sites and the length of ownership. I've noticed that a number of starts on products like top rated power supplies goes down after a year

Good point about niche sites and the length of ownership. I've noticed that a number of starts on products like top rated power supplies goes down after a year an a half or so. While you might be getting a newly released power supply with 500 reviews averaging closer to 5 stars, after 2 years, you will notice that same product with 1600 reviews averaging at below 4 stars, because owners probably came back and updated their reviews. It would be interesting to see a trend line of change in sentiment about a products over time, using existing data.