-- Amos Bronson Alcott
It's true, innit?
I've noticed that when I'm very concerned abut crect grammer and speling, it comes from fear of being criticized, not concern over being understood.
I think that if Shakespeer (noted for spelling his name differently all the time) had been very concerned with Correctness, we would not have had the expressive plays we have. I'm sure, for instance, that his ol' school teacher would have had some harsh words to say about his penchant for making up his own words.
I'm not saying correct grammar and such is not worth learning, so you know what you're doing, but if it doesn't stand in the way of becoming the worlds most popular and respected scribe, then in the end it may not be worthy of losing sleep over.
The funny thing is, I am a professional writer (ok, hack copywriter, but still), and I can assure all of you aspiring writers that conveying a thought clearly is far more important than being an accurate typist or the grammar queen.
Yes, and perhaps harder too. Grammar is just a set of rules, but clear conveyance demands a feel for how millions of people think, and to fit the writing into that effectively.