You should look at HelloTalk. It's real people communicating in each others' language. Unbelievably great service, almost as good as sitting down to a coffee wi

You should look at HelloTalk. It's real people communicating in each others' language. Unbelievably great service, almost as good as sitting down to a coffee with someone. Actually, in some ways better. HelloTalk has a "correct the other person's sentence" feature that shows an inline diff, yet it's simple enough for people who have never heard the term diff.