There should at least be a demo mode that doesn't worry about persisting history across sessions - just shows the product. If you insist on making an account for everyone, permit something like Facebook Connect so I can control how much data I give you and don't have to think about making yet another account.

Exactly. I was hoping to try it out to see if it worked, but when I got the 'please give me your e-mail' I just tuned out.

Edit: Just wanted to say that besides that, the landing page looks really nice, and it can be a useful product, albeit with a small market.

I know the email thing is a put off but if it's any consolation, the email isn't (immediately) confirmed, nor is the password. Just use a dummy email (try yopmail), you can probably change it later.

I agree on principal but this tool is cool enough that I think it's worth hopping the gate for.

Sorry to say "me too" but "me too". At least let me play with a few screens before the nagging starts. Shame. Looked like a good idea and I'm always trying to tie my fingers in knots with the next emacs C-S-M-repeat-last-interactive-regexp-update

Thanks for the feedback. I agree a demo on the front page would be nicer. I'll work on getting that done!

Why does there need to be a sign in page at all? How does that benefit the user? Shouldn't I be able to come to the page, choose a topic, and start practicing? If I want to save progress, or customize something, then I might want to create an account.