Every time I go to Amazon website, an extra launcher icon gets created in my launcher as long as I'm on the Amazon website. How can I prevent this icon from appearing in the launcher? It's a waste of space, because I have already a Firefox launcher icon, and the Amazon icon is nothing else than Firefox being on the Amazon website. I don't want web apps to appear in the launcher. It's enough that they are a shortcut in the dash. So How do I keep them from creating superfluous icons in the launcher?
I assume you are running 12.10. Can you do without the shortcut in the dash as well? If you can, just uninstall that and the icon shouldn't appear in the launcher.