As we all know the current search method is not so easy to use. We, only sometimes find what we need. And not only would this tag system help improve the current search system but make it even better and faster to use. In each submission, a small field could be used to included tags. It could be an optional field as some things wouldn't need tags. Such as a thread submission about someone's birthday.
Tags for a submission like this could/would be: idea, tags, suggestion
Will be live soon!