example_feed.rb

require 'rubygems'
require 'feedzirra'

# gem install feedzirra
url = "http://sunlightlabs.com/blog/feeds/tag/datacatalog/"
feed = Feedzirra::Feed.fetch_and_parse(url)

puts feed.title
puts feed.url
puts feed.feed_url
puts feed.etag
puts feed.last_modified

entries = feed.entries
entries.each do |entry|
  puts "\n== #{entry.title}"
  puts "url        : #{entry.url}"
  puts "author     : #{entry.author}"
  puts "summary    : #{entry.summary}"
  puts "context    : #{entry.content}"
  puts "published  : #{entry.published}"
  puts "categories : #{entry.categories}"
end