From the NAD's dear friend Rasmenia, originally posted as a comment.
Egad... I can't take it. I've just got to spit out my 2 cents & I'll do my best not to create a mess of logorrhea on the page, here.
My opinon - for whatever it's worth - is that the days of Strunk & White are over.
Obviously, if one has the prose of the Elysian Fields endlessly streaming out of their ass, it won't matter much if they haven't yet grasped the concept of how to use quotes, commas & other dandy dots & dashes.
At the same time, the most rigid grammar Nazi isn't necessarily a good writer.
I'm very picky about each & every word when I'm writing a peice of fiction. I'm just as selective with each bit of punctuation & when MSWord (or a human being in my writer's group) tries to tell me that I shouldn't use an ellipses, or a sentence fragment, I ignore it.
Part of writing is using your own voice to make your own style & fuck the rules - THERE ARE NO RULES.
But... it still has to be readable.
So, um... yeah. What I'm saying is, I agree with Matt.