Grumpy Grammar Grinch Grouses...

[Crankin]

Yea, the "does" was simply a typo.
While I really know that spelling ability has nothing to do with intelligence, it still bothers me to see misspelled words in print. I know there are varying opinions as to how necessary correct spelling is on a forum like this, but the same errors over and over get to me. I am pretty sure many would tell me to chill out, and that it doesn't matter.
As far as the speech patterns go, many of them are regional. It would be sad to lose some of the words that are unique to different parts of the country. It's already happened around Boston. Words like tonic (soda), barrel (garbage can), and bubbler (water fountain) are only heard in certain towns, usually places where many generations of families have lived without any in-out migration. You only hear the "Boston accent" in the old mill cities, certain towns, or in older people. I know that I purposely lost mine very quickly when I moved away in high school.
However, things like "I seen" and "he don't" or "your" for "you're" are just bad grammar/spelling!

[redrhodie]

I'm a right brain type, so I hope you all give me a break when I screw up. I have other strengths.

I confess to having issues with its and it's, affect and effect, and even left and right . I can use them correctly, but it takes some effort.

But, I can draw a nude figure without looking at the paper.

[OakLeaf]

However, things like "I seen" and "he don't" ... are just bad grammar

Actually, I think it's more casual vs. formal than "good vs. bad." In many social situations, saying "I saw" or "he doesn't" is like wearing black tie to a football game. Cambridge is different from Appalachia on that score, I'm sure. But my opinion is when in Rome, speak Latin. (Or Italian, depending on what millennium that saying came from. )

I use both of those constructions frequently in conversation; never in formal situations and rarely in writing. And I'm the one who just went back and edited to make sure that the period was on the correct side of the quotation marks.

[Veronica]

However, things like "I seen" and "he don't" or ... are just bad grammar/spelling!

Not necessarily...

I've been taking a class that talks about African American English and often what we hear as poor grammar is actually a linguistic dialectic and has real meaning.

When someone says, "He been bugging me." It's not poor grammar; it means the person has been bugging them repeatedly. "I seen" means the person has seen it often. "He don't never..." the repeated negative is for emphasis.

It's been really interesting. AND, it's helped me understand my students a little bit better. The trick is getting the kids to understand when they need to use standard English.

Veronica