ICAO level 4 English
Its a good thing all professional pilots must be able to pass the level 4 ICAO English test. That way when someone is posting with absolutely horrible English I can surmise that it is a non-pilot posting. Right???
Before you start flaming, I am not a native English speaker. I couldn't say more than milk, bread and beer when I was 16. (And very often beer came out as bear).