Why, should we use Standard American English and what are the characteristics of the audience?

Question

Why, should we use Standard American English and what are the characteristics of the audience? How do all these elements of (the writer, audience, topic, context, etc.) interplay?

Answer 1

Try to read some of these questions around here.  That should give you all the reason you need to use standard English instead of SMS-speak, Ebonics, Trailer-Talk, Celeb-babble, and any other pseudo-English variant.