Ok, so I logged on to Dazed Digital earlier and find one of the best examples of web marketing I've seen yet, a small flash ad for nikeid.com on the right where you enter your name and a descriptor into the boxes, press go and it randomly designs you a pair of shoes you can buy. I like that there is no sound or excessive loudness to the advert, it works well in context and fits the sites colour scheme.
Anyway, without further ado, my new shoes, as designed by the wee advert on the website. (They would be my new shoes, had I £120 to spare)

I don't know
How do I do it?