This is a neat web app and I liked it. However, it is asking me to sign up after finishing the initial test. Why not give me few more tasks to do, let me know what areas should I improve and then ask for if I am interested to register/sign up. It will be great if the exercise offers single sentence with one or two grammatical error/s instead of a whole paragraph. But anyway I believe it is a great start and heading towards right direction. Thank you guys for such an awesome Web App. I will register and go through it more and will provide your periodic feedback.

Cool, thanks. We are thinking about doing a 5 minute guided tour through the site now so that we can show off the entire experience before asking for sign up. It'd be great to get your feedback on it once it is up.

Tried it out, seems cool. Question aside from the app, what is the purpose of your non-profit and how are you funded?

We are funded by the Gates Foundation. We intend to become a commercial nonprofit and charge for lessons (a freemium model of 1,000 free lessons). We are a nonprofit as we'd like to develop a model of crowdsourced content creation. Being a nonprofit signals that this content isn't going towards making us rich. We are still working out this model, and in the EdTech space there are a couple of foundations that make this possible.

If you haven't seen No Red Ink (noredink.com), you should check it out. They do something similar.

Best of luck!

Yep we know about NoRedInk. We differentiate ourselves by focusing on learning by writing, rather than multiple choice questions. We're also taking a different approach to content development by being open source and open content. All of our content is reusable under a creative commons license.

I like it! And thanks for putting the code on GitHub too.

For sure! We are an open source project, and we'd appreciate the help from Rails developers looking to contribute.