Whilst in London I had a couple of pints with the Flickr pals, including the splendid Martino. I was telling him about my ideas about obvious use of flash, and he told me about Bruce Gilden, (though, actually, we both forgot and had to nudge one anothers's memories by Flickrmail just now to recall the conversation). Anyway, he's given me this link to a youtube video of Gilden working. Brilliant. I don't know if that would be a viable technique in Glasgow, mind. But the flash-in-the-face idea IS a good idea, even when photographing inside the "tribe", per Goldin. (Gilden/Goldin = good shorthand for photographing out/inside your social group).