The copyright even the CC license we currently use, provides you protection from people using your content outside the agreed upon usage. Meaning they can't legally take your material and use it for commercial reasons or with out attributing the original source material.
Now it's up to you to protect those legal rights.
Of course, I wouldn't expect anyone but myself to clean up my own mess.

Alright, so having read the fine print, what is the difference between SC's current copyright and a standard?