Add a nag to admin dashboard if you haven't changed the title site setting from the default 'Discourse'

app/models/admin_dashboard_data.rb

@@ -20,6 +20,21 @@ class AdminDashboardData
     'notify_user_private_messages'
   ]
 
+  def problems
+    [ rails_env_check,
+      host_names_check,
+      gc_checks,
+      sidekiq_check || queue_size_check || clockwork_check,
+      ram_check,
+      facebook_config_check,
+      twitter_config_check,
+      github_config_check,
+      failing_emails_check,
+      default_logo_check,
+      contact_email_check,
+      title_check ].compact
+  end
+
   def self.fetch_all
     AdminDashboardData.new
   end
@@ -39,20 +54,6 @@ class AdminDashboardData
     )
   end
 
-  def problems
-    [ rails_env_check,
-      host_names_check,
-      gc_checks,
-      sidekiq_check || queue_size_check || clockwork_check,
-      ram_check,
-      facebook_config_check,
-      twitter_config_check,
-      github_config_check,
-      failing_emails_check,
-      default_logo_check,
-      contact_email_check ].compact
-  end
-
   def rails_env_check
     I18n.t("dashboard.rails_env_warning", env: Rails.env) unless Rails.env == 'production'
   end
@@ -112,4 +113,8 @@ class AdminDashboardData
     return I18n.t('dashboard.contact_email_missing') if !SiteSetting.contact_email.present?
     return I18n.t('dashboard.contact_email_invalid') if !(SiteSetting.contact_email =~ User::EMAIL)
   end
+
+  def title_check
+    I18n.t('dashboard.title_nag') if SiteSetting.title == SiteSetting.defaults[:title]
+  end
 end

config/locales/server.en.yml

@@ -350,6 +350,7 @@ en:
     default_logo_warning: "You haven't customized the logo images for your site. Update logo_url, logo_small_url, and favicon_url in the <a href='/admin/site_settings'>Site Settings</a>."
     contact_email_missing: "You haven't provided a contact email for your site. Please update contact_email in the <a href='/admin/site_settings'>Site Settings</a>."
     contact_email_invalid: "The site contact email is invalid. Please update contact_email in the <a href='/admin/site_settings'>Site Settings</a>."
+    title_nag: "The title Site Setting is still set to the default value. Please update it with your site's title in the <a href='/admin/site_settings'>Site Settings</a>."
 
   content_types:
     education_new_reply: