diff --git a/Appendix-B:-Firefox-Add-ons.md b/Appendix-B:-Firefox-Add-ons.md
index e474cf9..344478e 100644
--- a/Appendix-B:-Firefox-Add-ons.md
+++ b/Appendix-B:-Firefox-Add-ons.md
@@ -18,6 +18,7 @@ Legend:
 ### :small_orange_diamond: Recommended Web Extensions
 
 * [Link Cleaner](https://addons.mozilla.org/firefox/addon/link-cleaner/) | [GitHub](https://github.com/idlewan/link_cleaner)
+  * not intended to "clean urls" in content, it is designed to clean/redirect urls you load, eg strip `utm_*` parameters on all domains
 * [Request Control](https://addons.mozilla.org/firefox/addon/requestcontrol/) | [GitHub](https://github.com/tumpio/requestcontrol)
    * Examples of [Filter Rules](https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.5-Request-Control)
 * [Redirector](https://addons.mozilla.org/firefox/addon/redirector/) | [GitHub](https://github.com/einaregilsson/Redirector)