off topic... when people talk about sean paul being (half) portuguese, or tami chin (up & coming dancehall singer) being (half) chinese, the link with portugal or china is way way back in time. yes, sean paul's got portuguese ancestry, but i don't think he's portuguese in the sense that he speaks it or goes on holiday to lisbon to see his grandmother etc.
but i'm not sure that sean paul is 'a light-skinned black jamaican' either - when i met him, i noticed with some surprise that he doesn't have afro hair - it's straight black european hair which is braided and so from a distance it looks afro. i could be wrong, or he could just have straight afro hair, or maybe he's so mixed that his hair has come out like this still, i dunno.
with regards to him and cecile 'learning patois' i don't know - certainly he's an uptown boy and maybe his parents don't speak patois, but what do you define as 'learning patois'? is it differnt to pick it up from your friends rather than your parents? no idea
back to topic... interesting article - like people have said above, the basic premise was good while the fleshing-out details were often way off the mark (e.g. the glossary)
when i was at school (early 90s), all the black kids (whether of caribbean or african parentage) used a lot of yardie slang/accents, and a few white kids as well. and then there's loads of jamaican slang which has bascially become standard english (e.g. wicked) that isn't even necessarily thought of as patois any more. but nowadays, it seems to be so much more prevalent. all the turkish, east african, asian and south american kids where i work (FE college in north london) have accents/slang which are basically indistinguishable from the black kids, which simply wasn't the case when i was at school (also north london)