diff --git a/app/controllers/reports_controller.rb b/app/controllers/reports_controller.rb
index 05d020588..9187fce9c 100644
--- a/app/controllers/reports_controller.rb
+++ b/app/controllers/reports_controller.rb
@@ -6,4 +6,8 @@ class ReportsController < ApplicationController
   def janitor_trials
     @report = Reports::JanitorTrials.new
   end
+
+  def contributors
+    @report = Reports::Contributors.new
+  end
 end
diff --git a/app/logical/reports/contributors.rb b/app/logical/reports/contributors.rb
new file mode 100644
index 000000000..3b2a8c7dc
--- /dev/null
+++ b/app/logical/reports/contributors.rb
@@ -0,0 +1,9 @@
+require 'statistics2'
+
+module Reports
+  class Contributors < User
+    def users
+      ::User.where("users.level >= ? and users.post_upload_count >= 250", ::User::Levels::CONTRIBUTOR).order("created_at desc").limit(50).map {|x| Reports::UserPromotions::User.new(x)}
+    end
+  end
+end
diff --git a/app/logical/reports/user_promotions.rb b/app/logical/reports/user_promotions.rb
index ac996e08c..bbab3cb60 100644
--- a/app/logical/reports/user_promotions.rb
+++ b/app/logical/reports/user_promotions.rb
@@ -30,16 +30,17 @@ module Reports
     def self.confidence_interval_for(user, n)
       up_votes = Post.where("created_at >= ?", min_time).where(:is_deleted => false, :uploader_id => user.id).where("score >= ?", n).count
       total_votes = Post.where("created_at >= ?", min_time).where(:uploader_id => user.id).count
-      ci_lower_bound(up_votes, total_votes, 0.95)
+      ci_lower_bound(up_votes, total_votes)
     end
 
-    def self.deletion_confidence_interval_for(user)
-      deletions = Post.where(:uploader_id => user.id, :is_deleted => true).count
-      total = Post.where(:uploader_id => user.id).count
-      ci_lower_bound(deletions, total, 0.95)
+    def self.deletion_confidence_interval_for(user, days = nil)
+      date = (days || 30).days.ago
+      deletions = Post.where("created_at >= ?", date).where(:uploader_id => user.id, :is_deleted => true).count
+      total = Post.where("created_at >= ?", date).where(:uploader_id => user.id).count
+      ci_lower_bound(deletions, total)
     end
 
-    def self.ci_lower_bound(pos, n, confidence)
+    def self.ci_lower_bound(pos, n, confidence = 0.95)
       if n == 0
         return 0
       end
diff --git a/app/models/user.rb b/app/models/user.rb
index dcba0b15c..caaf03313 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -760,6 +760,12 @@ class User < ActiveRecord::Base
     end
   end
 
+  module StatisticsMethods
+    def deletion_confidence(days = 30)
+      Reports::UserPromotion.deletion_confidence_interval_for(self, days)
+    end
+  end
+
   include BanMethods
   include NameMethods
   include PasswordMethods
@@ -774,6 +780,7 @@ class User < ActiveRecord::Base
   include ApiMethods
   include CountMethods
   extend SearchMethods
+  include StatisticsMethods
 
   def initialize_default_image_size
     self.default_image_size = "large"
diff --git a/app/views/reports/contributors.html.erb b/app/views/reports/contributors.html.erb
new file mode 100644
index 000000000..191e8c644
--- /dev/null
+++ b/app/views/reports/contributors.html.erb
@@ -0,0 +1,52 @@
+<div id="c-reports">
+  <div id="a-user-promotions">
+    <h1>Contributor Report</h1>
+
+    <p>Binomial proportion confidence interval for how likely a user's uploads will achieve a score of at at least n with 95% confidence within the past 30 days. Most statistics are not significant unless there are at least 300 uploads.</p>
+
+    <table width="100%" class="striped" id="sortable">
+      <thead>
+        <tr>
+          <th data-sort="string">User</th>
+          <th data-sort="int">Level</th>
+          <th data-sort="int">Uploads</th>
+          <th data-sort="int">score:3+</th>
+          <th data-sort="int" title="25% of uploads received this score or less">quartile score</th>
+          <th data-sort="int" title="50% of uploads received this score or less">median score</th>
+          <th data-sort="int">deletion</th>
+        </tr>
+      </thead>
+      <tbody>
+        <% @report.users.each do |user| %>
+          <% if user.confidence_interval_for(3) > -1 %>
+            <tr>
+              <td><%= link_to_user user.user %></td>
+              <td data-sort-value="<%= user.level %>"><%= user.level_string %></td>
+              <td><%= link_to user.post_upload_count, posts_path(:tags => "uploader:#{user.name} order:random", :limit => 200) %></td>
+              <td><%= number_to_percentage user.confidence_interval_for(3), :precision => 0 %></td>
+              <td><%= user.quartile_score %></td>
+              <td><%= user.median_score %></td>
+              <td><%= link_to number_to_percentage(user.deletion_confidence_interval, :precision => 0), posts_path(:tags => "uploader:#{user.name} status:deleted", :limit => 200) %></td>
+            </tr>
+          <% end %>
+        <% end %>
+      </tbody>
+    </table>
+  </div>
+</div>
+
+<% content_for(:page_title) do %>
+  Contributor Report - <%= Danbooru.config.app_name %>
+<% end %>
+
+<%= content_for(:html_header) do %>
+  <%= javascript_include_tag "stupidtable" %>
+  <script type="text/javascript">
+    $(function() {
+      $("#sortable").stupidtable().on("aftertablesort", function() {
+        $("#sortable tbody tr:even").removeClass("odd").addClass("even");
+        $("#sortable tbody tr:odd").removeClass("even").addClass("odd");
+      });
+    });
+  </script>
+<% end %>
\ No newline at end of file
diff --git a/app/views/reports/user_promotions.html.erb b/app/views/reports/user_promotions.html.erb
index f1045c07e..31242b32d 100644
--- a/app/views/reports/user_promotions.html.erb
+++ b/app/views/reports/user_promotions.html.erb
@@ -1,6 +1,6 @@
 <div id="c-reports">
   <div id="a-user-promotions">
-    <h1>User Promotion Confidence Intervals</h1>
+    <h1>User Promotion Report</h1>
 
     <p>Binomial proportion confidence interval for how likely a user's uploads will achieve a score of at at least n with 95% confidence within the past 30 days. Most statistics are not significant unless there are at least 300 uploads.</p>
 
@@ -12,7 +12,6 @@
           <th data-sort="int">Uploads</th>
           <th data-sort="string">Age</th>
           <th data-sort="int">score:3+</th>
-          <th data-sort="int">score:6+</th>
           <th data-sort="int" title="25% of uploads received this score or less">quartile score</th>
           <th data-sort="int" title="50% of uploads received this score or less">median score</th>
           <th data-sort="int">deletion</th>
@@ -27,7 +26,6 @@
               <td><%= link_to user.post_upload_count, posts_path(:tags => "uploader:#{user.name} order:random", :limit => 200) %></td>
               <td data-sort-value="<%= user.created_at.to_formatted_s(:db) %>"><%= time_ago_in_words user.created_at %></td>
               <td><%= number_to_percentage user.confidence_interval_for(3), :precision => 0 %></td>
-              <td><%= number_to_percentage user.confidence_interval_for(6), :precision => 0 %></td>
               <td><%= user.quartile_score %></td>
               <td><%= user.median_score %></td>
               <td><%= link_to number_to_percentage(user.deletion_confidence_interval, :precision => 0), posts_path(:tags => "uploader:#{user.name} status:deleted", :limit => 200) %></td>
diff --git a/app/views/static/site_map.html.erb b/app/views/static/site_map.html.erb
index b907d75bc..e0af97111 100644
--- a/app/views/static/site_map.html.erb
+++ b/app/views/static/site_map.html.erb
@@ -58,6 +58,7 @@
       <ul>
         <li><h1>Reports</h1></li>
         <li><%= link_to("User Promotions", reports_user_promotions_path) %></li>
+        <li><%= link_to("Contributors", reports_contributors_path) %></ul>
         <li><%= link_to("Janitor Trials", reports_janitor_trials_path) %></ul>
     </section>
     <section>
diff --git a/config/routes.rb b/config/routes.rb
index dd8a696ba..03f1e6b05 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -220,6 +220,7 @@ Rails.application.routes.draw do
   resource :related_tag, :only => [:show]
   get "reports/user_promotions" => "reports#user_promotions"
   get "reports/janitor_trials" => "reports#janitor_trials"
+  get "reports/contributors" => "reports#contributors"
   resources :saved_searches
   resource :session do
     collection do