Hee, just about! I have a feeling there might be some sort of North/South or generational thing going on, only because I think yoofy London people are the most likely to use 'all right?' as a greeting, and generally stick in 'all right' anywhere it can go. Although I only think that because I'm trying to back up my convoluted idea that the main reason I spell it 'all right' is because of how ubiquitous the meaningless version is in my life...