It appears that the present-day form of African American English is not the inheritance of the period of slavery, but the creation of the second half of the 20th century.
For each of us who appear to have had a successful experiment there are many to whom their own experiments seem barren and negative.
Personally, I just got one of these Vonage IP phones. It's actually pretty cool. It comes with one of these Cisco ATA routers where you just plug an analog handset in.