There are a LARGE number of US-Americans that honestly don't know the difference between speaking, writing, and texting.
There shouldn't be one. You should ALWAYS, speak, write, and text, in proper English, to the best of your abilities. I firmly believe that this disconnect, which makes people believe "It's the internet, it doesn't matter if I use proper grammar here. You're wrong when you say that it does, in fact, matter." This then causes an issue with me, when they go to type that and it comes out "its the internet it dont matter.Your rong wen u say that it matters"
This usually leads to me punching someone in the throat. Especially the whole Your = You're thing that seems to be all the rage right now.
This isn't a regional trend. And even if it were, it'd be moot, because Martha's Vineyard is NJ.
I take offense to that. I am from NJ. First big thing, Guidos aren't from NJ, as much as you'd like to think they are, they aren't. They're from NY, specifically, Long Island. Not to say we don't have guidos, they're just from down the shore. That being said, NJ is actually pretty sweet.... Except for the smell
EDIT:
But are they used to equal extents in all nations? Accent/dialect as a marker of identity is certainly discussed more in British society than it is in American society, no? I haven't heard Americans talk about accents the same way that British people do, and presumably people aren't likely to be as conscious of this phenomenon.
Oh you'd be surprised. Hell, just New Jersey alone has different accents. There's the Northern NJ accent (which I have, very close to a New York City Accent due to proximity to New York City), then the Central NJ accent, which is hard to describe. Then the southern NJ accent... These people can go die, they're who give NJ a bad name. They also sound like they're from the deep south... They also call sprinkles for ice cream "jimmies". I vote we kill those fuckers, who's with me?