Which subjects make a good blog great?

With so many important subject that are affecting the world… how do you make your voice stand out? One expression that came to mind again and again is “fresh water running through salt water”.

I think that expression is something that means people should be cutting though the noise and chatter and looking forward. We really need to be creating a voice that means something.

But then I ask what is my blast of fresh water going to be like?