Originally Posted by
habilis
...I've never dismissed anyone as "not worth talking to" on the basis of his or her grammar...
Nor have I.
It is a logical fallacy to leap from "advertises you're worth talking to or not" to "if you use poor grammar you're not worth talking to".
I will say that good grammar (let alone proper) is in serious demise in America. Any language is a living thing, subject to change over time. As I stated in my first post, I let poor grammar slide. I understand it is part of the continuing evolution of American English.
That doesn't mean I have to like it.
Tom