scrap google search results use hpricot

require 'rubygems'
require 'cgi'
require 'open-uri'
require 'hpricot'

q = %w{david cain pc}.map { |w| CGI.escape(w) }.join("+")
url = "http://www.google.com/search?q=#{q}"
doc = Hpricot(open(url).read)
urls = (doc/"div[@class='g'] a")
urls.each {|url| puts url['href']}