"I do ask if someone can site where these communities keep their "Rap" alive & just what is the process they the do this? "

Barry, I can only speak for what I see in my area, and what my kids tell me. It seems that rap is created in the schoolyards, lunch rooms, community dances, roller rinks, etc. - places where people gather to party and relax. Rap is just part of the continuing hip hop culture that grew out of urban streets in the late '70s.   

From what I see, I do think that the commercialization of hip hop and rap into the mainstream is probably having the same effect that folk music had in the '60s. Everyone wanted to make some money off of it, but what happened was that folk music integrated into popular culture and changed popular music. The singer-songwriters that developed in the 1970's were part of the evolution of folk music.   I think rap is going through the same changes, and it is impossible to see where it will go.

Thank you also for the mention of my radio show. I will PM you Don.   One thing - I do not normally play rap music! :)   I can't focus on every tradition! :)