I'VE written before about demographic groups that companies try to generate, based on your zip code or other data. Amazon has created what they call 'Purchase Circles', groups of products that people from your zip code or email domain have bought. It's interesting to browse these.
They identify two Purchase circles for me, Glen Mills, PA, where I live, and pobox.com, my mail forwarder that appears as my email domain. Glen Mills, it seems, buys a lot of Harry Potter books and bestsellers (kids 'n' cul-de-sacs suburbia, natch) and DVD's of recent hit movies: Gladiator, Braveheart, Jurassic Park, and so forth.
pobox.com, on the other hand buys—can you guess?—a slew of programming books, a cyberpunk novel (Tea from an Empty Cup) which I hadn't heard of up to now, and one of the Neil Gaiman Sandman books, World's End. pobox.com'ers taste in DVD's is also a little more eclectic than my neighbors', running to things like Big Trouble in Little China, The Prisoner and Monty Python, and Nick Park's Creature Comforts. pobox.com users are clearly a bunch of geeks. Go, us. Their taste in CD's is also a lot more adventuruous than is Glen Mills'.
We're all a member of lots of other circles, too, although Amazon doesn't know about them. Wonder what LJ users are buying? How about Metafilter readers? Or alt.obituaries habitués? I think reene is right, at least to some degree: we are what we buy, or rather, what we buy reflects what we are.
But we are so many different things.
I am large. I contain multitudes.