Think back to when Sayid tells the guy he shoots on the golf course "I'm one of the Oceanic 6"...
He gets really freaked out.. This COULD be because he's just somehow realised that Sayid's about to kill him. Or it COULD be because of the freaky circumstances in which the Oceanic 6 returned from the island.
Argh!! Doesn't it just make you wanna land in the world of Lost and look up "Oceanic 6" on their google, and find all their BBC and news pages
You know, then we'd know exactly what the public knows about the O6 in the show
(I've just Lost Fever really... I mean you wouldn't want to hear that info via a spoiler, but you DO really want to know the answers...)