I think a platform is great...if you have one.
But mostly, I think people selling platforms are the ones who want to help you build it.
I know that's very cynical of me. I'm a pretty cynical person in general...
The truth is, as a reader, I don't give a flying leap what the author's platform is. I don't care if she wants to save the whales or ban all guns or whatever... I just don't care.
If she writes a good story and makes me love her characters...that's all that matters. I think readers want good books. To hell with what the author wants....
That is all... :D :D
Have a great day!!