This doesn't work! Is it Firefox or is it iCloud? iCloud doen't recognize that the extension is already installed in Firefox. As such you cannot sync Safari bookmarks with Firefox. Apparently this 'bug' has been around for a while but as yet it's not been fixed.

Kompatibel mit bestehendem System

ブックマークの保存が確実ではなく、古いリンク切れのものまで、そのまま保存されてしまう。もう少し簡単に安全に利用できるようにして欲しいです。