Spams a certain URL with an 'effin parameter

spammer.rb

require 'curb'

x = 500
i = 0

while x > i do
    # Creates a random string
    o = [('a'..'z'), ('A'..'Z')].map { |i| i.to_a }.flatten
    string = (0...10).map { o[rand(o.length)] }.join

    http = Curl.post('http://example.com/controller/action', {:foo => string}) do |http|
        http.headers['X-Requested-With'] = 'XMLHttpRequest'
    end

    i = i + 1
end