With all that I have going on right now, dude, I actually didn't even recall our discussion/debate until your brought it up...
Since it is 'black' history month, you find many who will use the terms 'African-American'...and 'black' (maybe 'brown' or even 'chocolate')...interchangeably.
One thing I never got to mention in that previous thread: I live in the Miami area, an area in which your typical black resident has a 80% probability of being of Haitian descent and doesn't identify as being African in any way (the original departure from Africa is forgotten to history). In fact, the population of Haitians living here is sufficient enough that the local NPR affiliate down here broadcasts a news and information segment in Haitian Creole every night at 9 pm.
You might be able to successfully interchange the words 'black' and 'African American' in some parts of the country, but this isn't one of them - and the first time I was corrected, by a Haitian, was the moment I became sensitive to the need for distinction.