It isn't something you purchase with the intent to turn around for profit, or in some cases even the value paid. It isn't something you own if it's something you don't understand. It isn't something you buy just to store in a basement. It certainly isn't something that's easy to define.
Art provokes. Art challenges. Art is an outlet. Art is something that can literally be anything, yet everyone knows what art is to them. The OCCUPY WALL SPACE movement isn't to force people to buy art, but when they do to actually consider the art, artist and community.
It's far too easy to run to Pier 1 or Bed, Bath and Beyond and purchase an over priced reproduction that's been mass printed. For the same price, however, you can hand pick an original piece that will make you smile, give you something to talk about and perhaps inspire you to think differently. Please do what you can to help people that offer so much to this world, and are so often overlooked.