I like the idea, but I don't think you need the big explanation box at the top. You built a very intuitive site. The only thing that needs an explanation is ho

I like the idea, but I don't think you need the big explanation box at the top. You built a very intuitive site. The only thing that needs an explanation is how to post. So I suggest having a button that says "post" and when it's pressed, show the different methods.