So I recently installed the very interesting Foxmarks add-on (plugin) for Firefox, in the hopes of syncing my bookmarks between my home and work computers. Things worked awesome, with one exception: my beloved Shift-Cmd-F keyboard shortcut for another Firefox extension (the absolutely ESSENTIAL Web Developer Toolbar) was being overwritten with one that opened up my Foxmarks settings.

It's not too hard to change, though: I just needed to edit a file:

sudo vim ~/Library/Application\ Support/Firefox/Profiles/tpatfdag.default/extensions/foxmarks@kei.com/defaults/preferences/prefs.js

The precise location may vary for you, but if you're on a Mac as I am you can just do a locate Firefox and grep through the results until you find what you're looking for.

The offending line was here:

pref("foxmarks.shortcut.OpenSettings", "f");

which I changed to:

pref("foxmarks.shortcut.OpenSettings", "z");

since I don't use Shift-Cmd-Z for anything.

Hope this helps someone!