diff --git a/Gemfile b/Gemfile
index 14b23e16..fdf97428 100644
--- a/Gemfile
+++ b/Gemfile
@@ -45,6 +45,7 @@ gem 'htmlentities'
 gem 'rinku'
 gem 'image_optim'
 gem 'image_optim_pack'
+gem 'ipaddress'
 
 platform :mri, :rbx do
   gem 'magic' # sudo apt-get install file, For OSX: brew install libmagic
diff --git a/Gemfile.lock b/Gemfile.lock
index 69308e6a..0bf1e9b7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -109,6 +109,7 @@ GEM
     image_size (1.5.0)
     in_threads (1.3.1)
     io-extra (1.2.8)
+    ipaddress (0.8.3)
     jimson-temp (0.9.5)
       blankslate (>= 3.1.2)
       multi_json (~> 1.0)
@@ -294,6 +295,7 @@ DEPENDENCIES
   image_optim
   image_optim_pack
   io-extra
+  ipaddress
   jdbc-postgres
   jruby-openssl
   json
@@ -346,4 +348,4 @@ DEPENDENCIES
   zipruby
 
 BUNDLED WITH
-   1.12.5
+   1.13.7
diff --git a/Rakefile b/Rakefile
index 120f015d..76b28d86 100644
--- a/Rakefile
+++ b/Rakefile
@@ -266,15 +266,6 @@ task :prime_site_updated_at => [:environment] do
   end
 end
 
-desc 'hash_ips'
-task :hash_ips => [:environment] do
-  Site.select(:id,:ip).order(:id).all.each do |s|
-    next if s.ip.nil? || s.ip.match(/#{$config['ip_hash_salt']}/)
-    s.ip = s.ip
-    s.save_changes validate: false
-  end
-end
-
 desc 'prime_site_files'
 task :prime_site_files => [:environment] do
   Site.where(is_banned: false).where(is_deleted: false).select(:id, :username).all.each do |site|
diff --git a/app/admin.rb b/app/admin.rb
index 2eda7fa6..0ef3cc27 100644
--- a/app/admin.rb
+++ b/app/admin.rb
@@ -236,7 +236,7 @@ post '/admin/banhammer' do
     site.ban!
     deleted_count += 1
 
-    if !params[:ban_using_ips].empty? && !site.ip.empty?
+    if !params[:ban_using_ips].empty? && IPAddress.valid?(site.ip)
       sites = Site.filter(ip: site.ip, is_banned: false).all
       sites.each do |s|
         next if usernames.include?(s.username)
@@ -244,6 +244,16 @@ post '/admin/banhammer' do
       end
       ip_deleted_count += 1
     end
+
+    if params[:classifier] == 'spam' || params[:classifier] == 'phishing'
+      next unless IPAddress.valid?(site.ip)
+      StopForumSpamWorker.perform_async(
+        username: site.username,
+        email: site.email,
+        ip: site.ip,
+        evidence: "#{params[:classifier]}\n#{site.screenshot_url(Site::SCREENSHOT_RESOLUTIONS.first)}"
+      )
+    end
   end
 
   flash[:success] = "#{ip_deleted_count + deleted_count} sites have been banned, including #{ip_deleted_count} matching IPs."
diff --git a/app/site.rb b/app/site.rb
index 0a151cd8..4dbd395f 100644
--- a/app/site.rb
+++ b/app/site.rb
@@ -257,7 +257,7 @@ post '/site/:username/report' do |username|
     redirect request.referer if current_site.id == site.id
     report.reporting_site_id = current_site.id
   else
-    report.ip = Site.hash_ip request.ip
+    report.ip = request.ip
   end
 
   report.save
diff --git a/config.yml.template b/config.yml.template
index 3c55d28e..11804688 100644
--- a/config.yml.template
+++ b/config.yml.template
@@ -24,6 +24,7 @@ development:
   education_tag_whitelist:
     - mrteacher
   screenshots_url: http://screenshots:derp@127.0.0.1:12345
+  stop_forum_spam_api_key: testkey
 test:
   database: 'postgres://localhost/neocities_test'
   database_pool: 1
@@ -47,3 +48,4 @@ test:
     - 10.0.0.2
   education_tag_whitelist:
     - mrteacher
+  stop_forum_spam_api_key: testkey
diff --git a/config.yml.travis b/config.yml.travis
index 4eb05aa9..a5e3445b 100644
--- a/config.yml.travis
+++ b/config.yml.travis
@@ -19,3 +19,4 @@ proxy_ips:
   - 10.0.0.2
 education_tag_whitelist:
   - mrteacher
+stop_forum_spam_api_key: testkey
diff --git a/models/site.rb b/models/site.rb
index 004f4bc3..52357b70 100644
--- a/models/site.rb
+++ b/models/site.rb
@@ -296,19 +296,15 @@ class Site < Sequel::Model
     end
 
     def ip_create_limit?(ip)
-      hashed_ip = hash_ip ip
-      Site.where('created_at > ?', Date.today.to_time).where(ip: hashed_ip).count > IP_CREATE_LIMIT ||
-      Site.where(ip: hashed_ip).count > TOTAL_IP_CREATE_LIMIT
-    end
-
-    def hash_ip(ip)
-      SCrypt::Engine.hash_secret ip, $config['ip_hash_salt']
+      Site.where('created_at > ?', Date.today.to_time).where(ip: ip).count > IP_CREATE_LIMIT ||
+      Site.where(ip: ip).count > TOTAL_IP_CREATE_LIMIT
     end
 
     def banned_ip?(ip)
       return false if ENV['RACK_ENV'] == 'production' && ip == '127.0.0.1'
+      return false if ip.blank?
       return true if Site.where(is_banned: true).
-        where(ip: hash_ip(ip)).
+        where(Sequel.or(ip: ip, ip: hash_ip(ip))).
         where(['updated_at > ?', Time.now-BANNED_TIME]).
         first
 
@@ -317,6 +313,10 @@ class Site < Sequel::Model
       false
     end
 
+    def hash_ip(ip)
+      SCrypt::Engine.hash_secret ip, $config['ip_hash_salt']
+    end
+
     def ssl_sites
       select(:id, :username, :domain, :ssl_key, :ssl_cert).
       exclude(domain: nil).
@@ -326,10 +326,6 @@ class Site < Sequel::Model
     end
   end
 
-  def ip=(ip)
-    super self.class.hash_ip(ip)
-  end
-
   def is_following?(site)
     followings_dataset.select(:follows__id).filter(site_id: site.id).first ? true : false
   end
diff --git a/tests/acceptance/signup_tests.rb b/tests/acceptance/signup_tests.rb
index cf25ffba..e8e123ed 100644
--- a/tests/acceptance/signup_tests.rb
+++ b/tests/acceptance/signup_tests.rb
@@ -60,7 +60,7 @@ describe 'signup' do
     site.site_updated_at.must_equal nil
     site.is_education.must_equal false
 
-    site.ip.must_equal Site.hash_ip('127.0.0.1')
+    site.ip.must_equal '127.0.0.1'
   end
 
   it 'fails if site with same ip has been banned' do
diff --git a/workers/stop_forum_spam_worker.rb b/workers/stop_forum_spam_worker.rb
new file mode 100644
index 00000000..f0f41b77
--- /dev/null
+++ b/workers/stop_forum_spam_worker.rb
@@ -0,0 +1,10 @@
+class StopForumSpamWorker
+  include Sidekiq::Worker
+  sidekiq_options queue: :stop_forum_spam, retry: 1, backtrace: true
+
+  def perform(opts)
+    opts.merge! api_key: $config['stop_forum_spam_api_key']
+    res = HTTP.post 'https://stopforumspam.com/add', opts
+    puts res.inspect
+  end
+end