I stumbled across a couple of articles that might be of interest to you all :
This article talks about the "black" language in that US of A. I don't profess to know much of the cultural issues around this, but I think it is interesting our own indigenous people, the Maori, also have dialect to themselves. As with all such languages there are some white who speak "Maori" and many Maori who's accent is the same as mine...
This article might be usefull to figure out what all those politicians are going on about in the US right now :)
Reflections on "Engineering Expressiveness". Does all our new technology really help us to be come more effective communicators, or do will we just fall into uniformity?