You could improve a bit the Join Form. I hate when all the field are erased when I make a mistake.. and also, there's no cancel button on this form (which might be arguably good or bad).

It could be great if there was stuff you could see without being registred... or if there is, the get started button should link there, and not to that form button.

For me, "Get started" means: I will show you quickly what I can do for you and not: "Fill this form, give me all your information, and then, I will show you what I can do for you". I suggest you do the inverse.. show me what you got, and if it's interesting, I'll subscribe.

On a side note, I like the main page with the live updates. Good job on that.