Walmart: Who shops there?

Everyone loves to hate Walmart. So, who shops there and makes it the Goliath that it is?
Is it shoppers like the ones you see in this video posted by peopleofwalmart.com?

The site claims to be a "satirical social commentary of the extraordinary sights" found at Walmart. Judging by the user-submitted photos on the blog, you would think Walmart only caters to a special kind of demographic. But really, is it only people with absurd outfits, strange body art and outdated hairdos that constitute the discount giant's core clientele? Or is Walmart more inclusive than that?