you also should beware of so-called volunteer programmes

These are some of the biggest scams going IMHO, especially the ones that expect YOU to PAY for the "privilege" of teaching little kids. Utterly deceitful and terrible. Like the teach and learn with georgia scam that got exposed by Turnoi some years back, where they had western teachers working for peanuts and living with a family in rural georgia, these sound much the same!!! Phew, what a stink!!!!