Ok, actually there's quite a few sites that talk about the art of photography, but they tend to get drowned out by the vast array of gear sites. Even sites such as Luminous Landscape, once very technique driven, are becoming more and more about the stuff we use to take pictures and less about the pictures.
But the take over is not complete. One of the semi-regular contributors on that site, Alain Birot, has his own little corner of the site, call Birots View, that has quite a bit on actually getting and image worth of all that gear we want to buy. Head over there and enjoy.
(and I promise to write something more interesting soon)