diff --git a/HALL-OF-SHAME.md b/HALL-OF-SHAME.md
new file mode 100644
index 00000000..0a9650bb
--- /dev/null
+++ b/HALL-OF-SHAME.md
@@ -0,0 +1,34 @@
+Vanilla Music is licensed under the terms of the [GPLv3 License](https://github.com/vanilla-music/vanilla/blob/master/LICENSE) 
+since commit [a5255](https://github.com/vanilla-music/vanilla/commit/a525523bf1bb5dadfef544843966936c46e8310f) (older releases used the MIT License)
+
+This means (among other things) that you are free to modify the source code and release your modified version.
+However: Publishing such a modified version also *requires* you to:
+
+* Provide the *full* source code of your modified version
+* Keep the original copyright message as it is. (Eg: Do not delete the 'About' screen in Preferences)
+
+These rules are pretty simple and fair, but some people just want to make a quick buck and upload modified (ad-infested) versions 
+of Vanilla Music to the play store.
+
+This list is a collection of such GPL violating versions published on the Google Play Store.
+
+
+## Blunt violations
+
+### MP3 Music Delta Pro
+* https://play.google.com/store/apps/details?id=com.extra.DeltaMusic
+* Removed 'About' section in App
+* Claims to be based on the old MIT licensed code (which is a lie)
+* Nasty Ads
+
+### MP3 Music Free
+* https://play.google.com/store/apps/details?id=com.extrastudio.easymusicplayer
+* Does not mention Vanilla Music in the play store entry, crashes in 'About' screen
+* Nasty Ads
+
+## Grey area
+
+### Mp3 Player Download
+* https://play.google.com/store/apps/details?id=com.mp3.volume.booster.equalizer
+* Keeps original copyright message and links to this repo (good) but fails to provide access to the modified source (bad)
+* Has Ads