昔どこぞのパクリブログ対策でやってた奴をPlack::Middlewareで。 mattn/Plack-Middleware-ReplaceToUnko - GitHub plack middleware for replacing images to shit image that referer from external sites. https://github.com/mattn/Plack-Middleware-ReplaceToUnko 指定の仕方も簡単で、ウンコ画像のURLを指定するだけ。 use strict; use warnings; use utf8; use lib 'lib'; use Plack::Builder; use Path::Class qw(file); my $app = sub { [ 302, [ "Location" => "/index.