フォローしてないフォロワー全部ブロックするやつ

delete_followers.rb

require "rubygems"
require "twitter"

Twitter.configure do |config|
  config.consumer_key = YOUR_CONSUMER_KEY
  config.consumer_secret = YOUR_CONSUMER_SECRET
  config.oauth_token = YOUR_OAUTH_TOKEN
  config.oauth_token_secret = YOUR_OAUTH_TOKEN_SECRET
end


client = Twitter::Client.new

bye = (client.follower_ids.ids - client.friend_ids.ids)
bye.each_with_index do |follower,index|
  client.block(follower) rescue
  client.unblock(follower) rescue

  puts index if index % 100 == 0
  sleep 0.5
end