gistfile1.rb

require 'rubygems'
require 'twitter'

auth = Twitter::HTTPAuth.new 'planeta_spfc', 'xxxxxxxxxxx'
base = Twitter::Base.new auth

base.followers.select { |f| !f.following }.each do |f| 
  begin
    base.friendship_create f.id
  rescue
  end
end

def base.friendship_show(id)
  perform_get("/friendships/show.json", :query => {:target_id => id})
end

base.friend_ids.each do |id|
  if base.friendship_show(id).relationship.target.following
    sleep 24
  else
    base.friendship_destroy id
    puts "destroyed id #{id}"
    sleep 48
  end
end