diff --git a/metadata.py b/metadata.py
index 08a7c9b5..a62f8360 100644
--- a/metadata.py
+++ b/metadata.py
@@ -34,6 +34,7 @@ def read_metadata():
         thisinfo['source'] = ''
         thisinfo['tracker'] = ''
         thisinfo['disabled'] = None
+        thisinfo['antifeatures'] = None
         thisinfo['marketversion'] = ''
         thisinfo['marketvercode'] = '0'
         thisinfo['repotype'] = ''
@@ -67,6 +68,16 @@ def read_metadata():
                         thisinfo['tracker'] = value
                     elif field == 'Disabled':
                         thisinfo['disabled'] = value
+                    elif field == 'AntiFeatures':
+                        parts = value.split(",")
+                        for part in parts:
+                            if (part != "Ads" and
+                                part != "Tracking" and
+                                part != "NonFreeNet" and
+                                part != "NonFreeAdd"):
+                                print "Unrecognised antifeature '" + part + "'"
+                                sys.exit(1)
+                        thisinfo['antifeatures'] = value
                     elif field == 'Market Version':
                         thisinfo['marketversion'] = value
                     elif field == 'Market Version Code':
diff --git a/metadata/com.drodin.tuxrider.txt b/metadata/com.drodin.tuxrider.txt
index 4c6aeeb5..314bf98d 100644
--- a/metadata/com.drodin.tuxrider.txt
+++ b/metadata/com.drodin.tuxrider.txt
@@ -1,4 +1,5 @@
 Disabled:Ads
+AntiFeatures:Ads
 License:GPLv2+
 Web Site:http://tuxrider.drodin.com/
 Source Code:https://github.com/drodin/TuxRider
diff --git a/metadata/org.mailboxer.saymyname.txt b/metadata/org.mailboxer.saymyname.txt
index 3f91caec..d6ff9dd7 100644
--- a/metadata/org.mailboxer.saymyname.txt
+++ b/metadata/org.mailboxer.saymyname.txt
@@ -1,4 +1,5 @@
 Disabled:Issues with a) Google Analytics usage tracking, b) ads, c) vague licensing
+AntiFeatures:Ads,Tracking
 License:GPLv2
 Web Site:http://tomtasche.at/p/SayMyName
 Source Code:http://github.com/TomTasche/SayMyName
diff --git a/update.py b/update.py
index 2840f7a9..15dc548d 100644
--- a/update.py
+++ b/update.py
@@ -209,6 +209,8 @@ for app in apps:
         addElement('tracker', app['tracker'], doc, apel)
         addElement('marketversion', app['marketversion'], doc, apel)
         addElement('marketvercode', app['marketvercode'], doc, apel)
+        if not (app['antifeatures'] is None):
+            addElement('antifeatures', app['antifeatures'], doc, apel)
 
         gotmarketver = False