diff --git a/Gemfile b/Gemfile
index f601553..892218b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,3 +4,4 @@ ruby '2.1.3'
 gem 'twitter_ebooks', '3.0.8'
 gem 'dotenv'
 gem 'cloudinary'
+gem 'time_difference'
diff --git a/Gemfile.lock b/Gemfile.lock
index cc4b8ad..e1e1e2a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,6 +1,12 @@
 GEM
   remote: http://rubygems.org/
   specs:
+    activesupport (4.2.0)
+      i18n (~> 0.7)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
     addressable (2.3.7)
     awesome_print (1.6.1)
     aws_cf_signer (0.1.3)
@@ -27,11 +33,13 @@ GEM
     http (0.6.3)
       http_parser.rb (~> 0.6.0)
     http_parser.rb (0.6.0)
+    i18n (0.7.0)
     json (1.8.2)
     memoizable (0.4.2)
       thread_safe (~> 0.3, >= 0.3.1)
     method_source (0.8.2)
     mime-types (2.4.3)
+    minitest (5.5.1)
     multipart-post (2.0.0)
     naught (1.0.0)
     netrc (0.10.2)
@@ -49,6 +57,8 @@ GEM
     simple_oauth (0.3.1)
     slop (3.6.0)
     thread_safe (0.3.4)
+    time_difference (0.3.2)
+      activesupport
     twitter (5.13.0)
       addressable (~> 2.3)
       buftok (~> 0.2.0)
@@ -80,4 +90,5 @@ PLATFORMS
 DEPENDENCIES
   cloudinary
   dotenv
+  time_difference
   twitter_ebooks (= 3.0.8)
diff --git a/app.json b/app.json
index 6c6af9e..1b4131c 100644
--- a/app.json
+++ b/app.json
@@ -26,6 +26,10 @@
     "CONSUMER_SECRET": "",
     "ACCESS_TOKEN": "",
     "ACCESS_TOKEN_SECRET": "",
+    "INITIAL_CORPUS_FILE": {
+      "required": false,
+      "value": "tweets.csv"
+    }
     "CLOUDINARY_URL": {
       "required": false,
       "value": ""
diff --git a/boodoo.rb b/boodoo.rb
index 352842a..b55c21b 100644
--- a/boodoo.rb
+++ b/boodoo.rb
@@ -348,11 +348,7 @@ class Ebooks::Boodoo::BoodooBot < Ebooks::Bot
 
   # Override Ebooks::Bot#blacklisted? to ensure lower<=>lower check
   def blacklisted?(username)
-    if @blacklist.map(&:downcase).include?(username.downcase)
-      true
-    else
-      false
-    end
+    @blacklist.map(&:downcase).include?(username.downcase)
   end
 
   # Follow new followers, unfollow lost followers
diff --git a/bots.rb b/bots.rb
index 43cfeca..373d96b 100644
--- a/bots.rb
+++ b/bots.rb
@@ -1,6 +1,7 @@
 require 'twitter_ebooks'
 require_relative 'boodoo'
 require 'dotenv'
+require 'time_difference'
 
 include Ebooks::Boodoo
 
@@ -62,6 +63,7 @@ class BoodooBot
     @attempts = 0
     @followers = []
     @following = []
+    @initial_corpus_file = SETTINGS['INITIAL_CORPUS_FILE']
     @archive_path = "corpus/#{@original}.json"
     @model_path = "model/#{@original}.model"
 
diff --git a/defaults.env b/defaults.env
index 98b39a7..4fa7d52 100644
--- a/defaults.env
+++ b/defaults.env
@@ -4,6 +4,7 @@ CONSUMER_KEY=
 CONSUMER_SECRET=
 ACCESS_TOKEN=
 ACCESS_TOKEN_SECRET=
+INITIAL_CORPUS_FILE=tweets.csv
 CLOUDINARY_URL=
 TWEET_INTERVAL=2h
 TWEET_CHANCE=0.8