A Writing Site, but Readers Responses Are Visible Only to You

It's like a content writing site, but reader's responses, and opinions on the content will be sent only to the author.

The author will also have the options like asking readers emails, their votes on a question etc.

Another way to explain this would be sort of like communicating through emails. You can share/send your emails to anyone you want; they can all see it, but only you can see the replies to you.

I already have the basic prototype app ready.

What are the improvement can I do to this idea?

Should it also have a PDF Page Rendering option? So that people can have their resume stored there as a page and see readers interaction with the page?