Invest in art: Is this your cup of tea?

Had some discussion with children after reading WSJ's weekend edition. Comtemporay art collection is just a Ponzi game suited for the rich (and stupid...)

Don't want to be offensive, the following "art" objects, although definitely not suitable to be displayed in, say, your dinning room, in fact have proven to be very good investment...

http://www.oddee.com/item_98781.aspx