Is it OK to say, `None of them have… ‘?

 People who love their grammar would argue that the sentence is wrong. They would want `none’ to be followed by the singular verb `has’. In informal contexts, however, there is a tendency, even among native speakers of English, to use the plural `have’. In American English, it is very common for people to say, `None of the movies were a hit’ and `None of the guys were good looking’.

Sourced from The Hindu ‘Know Your English’ Series, October 24, 2005