destroflyer

Offers buttons to up-/downrate posts and calculates user ratings based on their posts. 
Developed for: http://jmonkeyengine.org

bbPress Post Ratings

Offers buttons to up-/downrate posts and calculates user ratings based on their posts.

pixelgrade

vlad.olaru

George Olaru

Andrei Lupu

raduconstantin

Easily add a rating system to your comments area and start displaying reviews from your visitors.

Comments Ratings

ただ、平均値表示などの機能がないため、その点で不便に感じました。
欲を言うならば、Comment Star Rating（Matometaru）のように、post metaにデータが登録されて、細かい表示がされるとより良いと感じました。

However, I felt inconvenient at that point because there was no function such as average display.
If you say greed, like Comment Star Rating (Matometaru), I felt that it would be better if data were registered in post meta and detailed display was done.

軽量で良いプラグインです（ Lightweight and good plugin）

Convert comments into reviews for your visitors.

bbPress Post Ratings vs Comments Ratings