A simple gem to parse Amazon product reviews.
gem install amazon-review
Or if you're using Bundler, add this line to your Gemfile:
gem 'amazon-review'
require 'amazon-review'
# parse reviews for "The Ruby Programming Language" book by O'Reilly
# http://www.amazon.com/Ruby-Programming-Language-David-Flanagan/dp/0596516177
reviews = AmazonReview.find_reviews('0596516177')
# interact with data
r = reviews.first
r.url #=> "http://www.amazon.com/review/RLJ78T9DWIPBD"
r.title #=> "This is the new authoritative Ruby book and the one to buy."
r.text #=> "Originally planned as a second edition to Ruby classic, Rub..."
r.rating #=> 5.0
r.helpful_count #=> 128.0
r.helpful_ratio #=> 0.9624060150375939
r.date #=> <Date: 2008-02-26 ((2454523j,0s,0n),+0s,2299161j)>
r.user_id #=> "A2P9K69PISA1IO"