Jet Cash (a Bitcoin Talk merit source) started a project to help members who don't have English as their first language. It is called "Fit to Talk English", and you can visit the site by clicking this link -
The Fit to Talk English project.
The site includes thread grooming as well as post correction and enhancement. The site has an international flavour, and, as well as the English language posting help, there are several discussions about life in a wide variety of countries and cultures.