These features are 4chan-specific.

src/General/BoardConfig.coffee

@@ -2,6 +2,7 @@ BoardConfig =
   cbs: []
 
   init: ->
+    return unless g.SITE.software is 'yotsuba'
     now = Date.now()
     unless now - 2 * $.HOUR < (Conf['boardConfig'].lastChecked or 0) <= now and Conf['boardConfig'].troll_flags
       $.ajax "#{location.protocol}//a.4cdn.org/boards.json",

src/Menu/ArchiveLink.coffee

@@ -1,6 +1,6 @@
 ArchiveLink =
   init: ->
-    return unless g.VIEW in ['index', 'thread'] and Conf['Menu'] and Conf['Archive Link']
+    return unless g.SITE.software is 'yotsuba' and g.VIEW in ['index', 'thread'] and Conf['Menu'] and Conf['Archive Link']
 
     div = $.el 'div',
       textContent: 'Archive'

src/Monitoring/MarkNewIPs.coffee

@@ -1,6 +1,6 @@
 MarkNewIPs =
   init: ->
-    return if g.VIEW isnt 'thread' or !Conf['Mark New IPs']
+    return unless g.SITE.software is 'yotsuba' and g.VIEW is 'thread' and Conf['Mark New IPs']
     Callbacks.Thread.push
       name: 'Mark New IPs'
       cb:   @node

src/Posting/Captcha.replace.coffee

@@ -1,6 +1,6 @@
 Captcha.replace =
   init: ->
-    return unless d.cookie.indexOf('pass_enabled=1') < 0
+    return unless g.SITE.software is 'yotsuba' and d.cookie.indexOf('pass_enabled=1') < 0
 
     if Conf['Force Noscript Captcha'] and Main.jsEnabled
       $.ready Captcha.replace.noscript

src/Posting/PassLink.coffee

@@ -1,6 +1,6 @@
 PassLink =
   init: ->
-    return unless Conf['Pass Link']
+    return unless g.SITE.software is 'yotsuba' and Conf['Pass Link']
     Main.ready @ready
 
   ready: ->

src/site/SW.tinyboard.coffee

@@ -3,21 +3,17 @@ SW.tinyboard =
   mayLackJSON: true
 
   disabledFeatures: [
-    'Board Configuration'
     'Normalize URL'
-    'Captcha Configuration'
     'Index Generator'
     'Announcement Hiding'
     'Resurrect Quotes'
     'Quick Reply Personas'
     'Quick Reply'
     'Cooldown'
-    'Pass Link'
     'Index Generator (Menu)'
     'Report Link'
     'Delete Link'
     'Edit Link'
-    'Archive Link'
     'Quote Inlining'
     'Quote Previewing'
     'Quote Backlinks'
@@ -30,7 +26,6 @@ SW.tinyboard =
     'Quote Threading'
     'Thread Stats'
     'Thread Updater'
-    'Mark New IPs'
     'Banner'
     'Flash Features'
     'Reply Pruning'