diff --git a/Firefox/Addons/uBlock.txt b/Firefox/Addons/uBlock.txt
new file mode 100644
index 0000000..8c68dff
--- /dev/null
+++ b/Firefox/Addons/uBlock.txt
@@ -0,0 +1,19 @@
+!!! Get rid of ads embedded into the site itself
+! Coolors
+coolors.co###generator_inner div[id^="a"]
+coolors.co###header div[id^="a"]
+coolors.co##div[class^="a"]
+
+!!! Get rid of ad slots that are already empty anyways
+! ブログ村
+blogmura.com##.ad-list
+! goo
+www.goo.ne.jp##div[id^="gooad-"]
+! TypingClub/EdClub
+www.typingclub.com##div[id^="adslot_"]
+
+!!! Get rid of everpresent subscription/upgrade nags, and always displayed subscription-only features
+! Letterboxd
+letterboxd.com##.js-hide-in-app.banner-950.banner
+letterboxd.com##.js-hide-in-app.banner-250.banner
+letterboxd.com##.js-watch-panel.watch-panel
\ No newline at end of file