Extension has been renamed in an effort to satisfy trademark concerns expressed by LinkedIn.

The extension now asks for the permissions it needs if they weren't granted automatically by the browser or the user revoked them.

The Alt-S / Option-S key binding on the options page to save the options has been disabled on Firefox because the Firefox menu accelerators interfere with it and I've been unable to find a workaround for that.

There is now a backup page linked to from the bottom of the options page that you can open to view a flat representation of your filter patterns so that you can save them to a local file as a backup in case you need to restore them later.