diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
new file mode 100644
index 00000000..ec45db72
--- /dev/null
+++ b/CONTRIBUTORS.txt
@@ -0,0 +1,10 @@
+List of contributors, format is "Name @github <email>"
+
+Andreas N. @pixeldesu
+Georg G. @nilsding
+Yuki @yukimono
+Adel D.-K.
+Howl
+Iain D.
+Jona H. @schisma @ix
+Robin B.
diff --git a/Gemfile b/Gemfile
index f3273c1a..737571bc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -68,6 +68,8 @@ gem 'redis'
 
 gem 'fake_email_validator'
 
+gem 'rollbar', '~> 1.5.3'
+
 group :development do
   # require spring 1.3.5 since shit's on fire on my local instance with 1.3.4 (Gem::LoadError)
   gem 'spring', '~> 1.3.5'
diff --git a/Gemfile.lock b/Gemfile.lock
index 468e48f3..c9ffaa3d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -360,6 +360,8 @@ GEM
     remotipart (1.2.1)
     responders (2.1.0)
       railties (>= 4.2.0, < 5)
+    rollbar (1.5.3)
+      multi_json (~> 1.3)
     rspec-core (3.0.4)
       rspec-support (~> 3.0.0)
     rspec-expectations (3.0.4)
@@ -529,6 +531,7 @@ DEPENDENCIES
   rake
   redcarpet
   redis
+  rollbar (~> 1.5.3)
   rspec-rails (~> 3.0.0)
   ruby-progressbar
   sanitize
diff --git a/app/controllers/ajax/question_controller.rb b/app/controllers/ajax/question_controller.rb
index c07305d2..17f61a53 100644
--- a/app/controllers/ajax/question_controller.rb
+++ b/app/controllers/ajax/question_controller.rb
@@ -55,16 +55,13 @@ class Ajax::QuestionController < ApplicationController
 
     if params[:rcpt] == 'followers'
       unless current_user.nil?
-        current_user.followers.each do |f|
-          Inbox.create!(user_id: f.id, question_id: question.id, new: true)
-        end
+        QuestionWorker.perform_async params[:rcpt], current_user.id, question.id
       end
     elsif params[:rcpt].start_with? 'grp:'
       unless current_user.nil?
         begin
-          current_user.groups.find_by_name!(params[:rcpt].sub 'grp:', '').members.each do |m|
-            Inbox.create!(user_id: m.user.id, question_id: question.id, new: true)
-          end
+          current_user.groups.find_by_name!(params[:rcpt].sub 'grp:', '')
+          QuestionWorker.perform_async params[:rcpt], current_user.id, question.id
         rescue ActiveRecord::RecordNotFound
           @status = :not_found
           @message = I18n.t('messages.question.create.not_found')
@@ -73,6 +70,13 @@ class Ajax::QuestionController < ApplicationController
         end
       end
     else
+      if User.find(params[:rcpt]).nil?
+        @status = :not_found
+        @message = I18n.t('messages.question.create.not_found')
+        @success = false
+        return
+      end
+
       Inbox.create!(user_id: params[:rcpt], question_id: question.id, new: true)
     end
 
diff --git a/app/views/layouts/application.html.haml b/app/views/layouts/application.html.haml
index 7580d04f..68376f4a 100644
--- a/app/views/layouts/application.html.haml
+++ b/app/views/layouts/application.html.haml
@@ -5,9 +5,6 @@
     %meta{'http-equiv' => 'X-UA-Compatible' ,content: 'IE=edge'}
     %meta{name: 'viewport', content: 'width=device-width, initial-scale=1, user-scalable=no'}
     %meta{name: 'theme-color', content: '#5e35b1'}
-    %meta{name: "mobile-web-app-capable", content: "yes"}
-    %meta{name: "apple-mobile-web-app-capable", content: "yes"}
-    %meta{name: 'apple-mobile-web-app-status-bar-style', content: 'black-translucent'}
     %link{rel: 'apple-touch-icon', href: '/apple-touch-icon-precomposed.png'}
     %link{rel: 'icon', href: '/images/favicon/favicon-16.png', sizes: '16x16'}
     %link{rel: 'icon', href: '/icon-152.png', sizes: '152x152'}
diff --git a/app/views/shared/_question.html.haml b/app/views/shared/_question.html.haml
index 393fad72..4e7717c3 100644
--- a/app/views/shared/_question.html.haml
+++ b/app/views/shared/_question.html.haml
@@ -1,3 +1,4 @@
+- type ||= nil
 .panel.panel-default.questionbox{data: { id: q.id }}
   .panel-body
     .media
diff --git a/app/views/user/questions.js.erb b/app/views/user/questions.js.erb
index 01344836..a27fddb8 100644
--- a/app/views/user/questions.js.erb
+++ b/app/views/user/questions.js.erb
@@ -1,8 +1,8 @@
 $('#questions').append('<% @questions.each do |q|
-  %><%= j render 'shared/question', q: q
+  %><%= j render 'shared/question', q: q, type: nil
 %><% end %>');
 <% if @questions.next_page %>
 $('#pagination').html('<%= j will_paginate @questions, renderer: BootstrapPagination::Rails, page_links: false %>');
 <% else %>
 $('#pagination, #load-more-btn').remove();
-<% end %>
\ No newline at end of file
+<% end %>
diff --git a/app/workers/deletion_worker.rb b/app/workers/deletion_worker.rb
index 5ddaf186..bd98371f 100644
--- a/app/workers/deletion_worker.rb
+++ b/app/workers/deletion_worker.rb
@@ -1,14 +1,14 @@
 class DeletionWorker
   include Sidekiq::Worker
 
-  sidekiq_options queue: :deletion
+  sidekiq_options queue: :deletion, retry: false
 
   # @param resource_id [Integer] user id passed from Devise
   def perform(resource_id)
     begin
       User.find(resource_id).destroy!
     rescue => e
-      Rails.logger.error "failed to delete user: #{e.message}"
+      logger.info "failed to delete user: #{e.message}"
     end
   end
 end
diff --git a/app/workers/question_worker.rb b/app/workers/question_worker.rb
new file mode 100644
index 00000000..98a614c8
--- /dev/null
+++ b/app/workers/question_worker.rb
@@ -0,0 +1,27 @@
+class QuestionWorker
+  include Sidekiq::Worker
+
+  sidekiq_options queue: :question, retry: false
+
+  # @param rcpt [String] recipient
+  # @param user_id [Integer] user id passed from Devise
+  # @param question_id [Integer] newly created question id
+  def perform(rcpt, user_id, question_id)
+    begin
+      user = User.find(user_id)
+      if rcpt == 'followers'
+        user.followers.each do |f|
+          Inbox.create(user_id: f.id, question_id: question_id, new: true)
+        end
+      elsif rcpt.start_with? 'grp:'
+        user.groups.find_by_name!(rcpt.sub 'grp:', '').members.each do |m|
+          Inbox.create(user_id: m.user.id, question_id: question_id, new: true)
+        end
+      else
+        logger.info "unknown rcpt #{rcpt}"
+      end
+    rescue => e
+      logger.info "failed to ask question: #{e.message}"
+    end
+  end
+end
diff --git a/app/workers/share_worker.rb b/app/workers/share_worker.rb
index e607919b..0bc57799 100644
--- a/app/workers/share_worker.rb
+++ b/app/workers/share_worker.rb
@@ -1,7 +1,7 @@
 class ShareWorker
   include Sidekiq::Worker
 
-  sidekiq_options queue: :share
+  sidekiq_options queue: :share, retry: false
 
   # @param user_id [Integer] the user id
   # @param answer_id [Integer] the user id
@@ -11,8 +11,8 @@ class ShareWorker
       begin
         service.post(Answer.find(answer_id)) if services.include? service.provider
       rescue => e
-        Rails.logger.error "failed to post answer #{answer_id} to #{service.provider} for user #{user_id}: #{e.message}"
+        logger.info "failed to post answer #{answer_id} to #{service.provider} for user #{user_id}: #{e.message}"
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/config/initializers/rollbar.rb b/config/initializers/rollbar.rb
new file mode 100644
index 00000000..a148e79e
--- /dev/null
+++ b/config/initializers/rollbar.rb
@@ -0,0 +1,54 @@
+require 'rollbar/rails'
+Rollbar.configure do |config|
+  # Without configuration, Rollbar is enabled in all environments.
+  # To disable in specific environments, set config.enabled=false.
+  
+  config.access_token = ENV['ROLLBAR_ACCESS_TOKEN']
+
+  # Here we'll disable in 'test' and 'development':
+  if Rails.env.test? or Rails.env.development?
+    config.enabled = false
+  end
+
+  # scrub out the "confirmation_token" field
+  config.scrub_fields |= [:confirmation_token]
+
+  # By default, Rollbar will try to call the `current_user` controller method
+  # to fetch the logged-in user object, and then call that object's `id`,
+  # `username`, and `email` methods to fetch those properties. To customize:
+  # config.person_method = "my_current_user"
+  # config.person_id_method = "my_id"
+  # config.person_username_method = "my_username"
+  # config.person_email_method = "my_email"
+
+  # If you want to attach custom data to all exception and message reports,
+  # provide a lambda like the following. It should return a hash.
+  # config.custom_data_method = lambda { {:some_key => "some_value" } }
+
+  # Add exception class names to the exception_level_filters hash to
+  # change the level that exception is reported at. Note that if an exception
+  # has already been reported and logged the level will need to be changed
+  # via the rollbar interface.
+  # Valid levels: 'critical', 'error', 'warning', 'info', 'debug', 'ignore'
+  # 'ignore' will cause the exception to not be reported at all.
+  # config.exception_level_filters.merge!('MyCriticalException' => 'critical')
+  #
+  # You can also specify a callable, which will be called with the exception instance.
+  # config.exception_level_filters.merge!('MyCriticalException' => lambda { |e| 'critical' })
+
+  # Enable asynchronous reporting (uses girl_friday or Threading if girl_friday
+  # is not installed)
+  # config.use_async = true
+  # Supply your own async handler:
+  # config.async_handler = Proc.new { |payload|
+  #  Thread.new { Rollbar.process_payload_safely(payload) }
+  # }
+
+  # Enable asynchronous reporting (using sucker_punch)
+  # config.use_sucker_punch
+
+  # Enable delayed reporting (using Sidekiq)
+  # config.use_sidekiq
+  # You can supply custom Sidekiq options:
+  config.use_sidekiq 'queue' => 'rollbar'
+end
diff --git a/config/sidekiq.yml b/config/sidekiq.yml
index 87312f72..50db074a 100644
--- a/config/sidekiq.yml
+++ b/config/sidekiq.yml
@@ -10,3 +10,5 @@ production:
   - paperclip
   - mailer
   - deletion
+  - rollbar
+  - question