[gault8121]

I'm building Quill.org, a web app that provides interactive English grammar lessons.

[WriteYourRep]

This is really neat. What powers the corrections? I was stunned by the results of the paragraph about Shackleton.

[gault8121]

Thanks for the feedback! The errors are manually seeded into the passages. We've built approximately 30 hours worth of lessons at: http://www.quill.org/lessons