This is really cool, I've learned a lot of latex in ~30 mins thanks to this.

I'm learning latex as part of a Numeric Methods course and will be sharing this with my fellow students

It would be great to have some feedback-app-thing integrated, I'll love to report issues, but I think that if it is in page would be better than going to some mail client or something. Maybe this could help: https://www.uservoice.com/ (I like it)