This is really cool. It would definitely be useful on my sites. One thing we do differently on http://www.queondaspanish.com/ http://www.queondaspanish.com/ th

This is really cool. It would definitely be useful on my sites. One thing we do differently on http://www.queondaspanish.com/ http://www.queondaspanish.com/ though is allow users who haven't confirmed there email use the logged in features but with limitations. They can keep track of their lesson progress for example, but not send messages to other users. They can also change misspelled email addresses, which I think would help in your case.