I agree with having both the post date (optional?) and the markdown option, I like the idea of being able to toggle markdown, you could still default to plain-t

I agree with having both the post date (optional?) and the markdown option, I like the idea of being able to toggle markdown, you could still default to plain-text and so preserve perfect backwards compatibility. Also I can't help but wonder about expiration dates and the ability to edit or delete, maybe have an optional password?