Manything is in the very early stages. When there is enough content and enough people visiting the site, then it will be fully released.
It isn't fully decided yet. We still have all the cards on the table. It might be a $5 subscription, it might be ads, maybe something entirely different. We will know as we get more feedback.
You sure can. If you have any PnP roleplaying content that is useful, you can send it from the "Contribute" page. You can also join the Facebook group and give feedback and suggestions.