Btw, the contemporary Caribbean definition of 'toasting" is different from the African American definition of that word, although I think that both definitions are expressions of the
appreciation and respect Africans had [have] for verbal communication skills.

See these excerpts from http://en.wikipedia.org/wiki/Toasting

"Traditional African American toasting
"Toasting has been part of African American urban tradition since Reconstruction as part of a verbal art tradition, dating back to the griots of Africa. African American stories usually lauds the exploits of the clever and not entirely law-abiding trickster hero (not always human) who uses his wits to defeat his opponents...

Jamaican toasting
In the late 1960s and early 1970s a strain of Jamaican music called DJ Toasting was developed. DJs working for producers would play the latest hits on traveling sound systems at parties and add their "toasts" or vocals to the music. These "toasts" consisted of boastful commentaries, chants, half-sung rhymes, rhythmic chants, squeals, screams, and rhymed storytelling.

Osbourne Ruddock (aka King Tubby) was a Jamaican sound recording engineer who created vocal-less rhythm backing tracks that were used by DJs doing "toasting" by creating one-off vinyl discs (also known as dub plates) of songs without the vocals and adding echo and sound effects.

Late 1960s toasting DJs included U-Roy and Dennis Alcapone, the latter known for mixing gangster talk with humor in his toasting. In the early 1970s, toasting DJs included I-Roy (his nickname is an homage to U-Roy) and Dillinger, the latter known for his humorous toasting style. In the late 1970s, Trinity became a popular toasting DJ.

The 1980s saw the first DJ Toasting duo, Michigan & Smiley, and the development of toasting outside of Jamaica. In England, Pato Banton explored his Caribbean roots humorous and political toasting [1] and Ranking Roger of the "Second Wave" or Two-Tone ska revival band The Beat from the 1980s did Jamaican toasting over music that blended ska, pop, and some punk influences.

The rhythmic rhyming of vocals in Jamaican DJ toasting influenced the development of rapping in African-American hip-hop [2] and the development of the Dancehall style."

-snip-

Ironically {actually probably purposely} "Blacka Shine" is the name of a contemporary Jamaican DJ toaster.