hb.rb

#!/usr/bin/env ruby
require 'rubygems'
require 'nokogiri'
require 'open-uri'

uri = 'http://b.hatena.ne.jp/hotentry'
query = '#main h3 a'

doc = Nokogiri::HTML.parse(open(uri).read)
doc.search(query).each do |e|
  puts e.inner_html
  puts e[:href]
end