_ «There's a lot of talk about 'platform' and 'brand' and 'voice', as if these are individual elements that are separate from each other. What I suggest is this:
Your platform is your brand is your voice.
There is no clear separation of the three.
And the heart of this is your blog, which is why I think it's so important for writers to have one. » _
If you are a writer, it's a worth read.