I use Apple's Aperture. I have around 200GB of photos organized in there. When I dump a flash card to the computer (using Aperture), I then remove the card, an

I use Apple's Aperture. I have around 200GB of photos organized in there. When I dump a flash card to the computer (using Aperture), I then remove the card, and delete it manually on the camera. Then I go through a quick pass in aperture rating everything that is just a poor/duplicate shot as '-1', so that it can go into my deletion bin. Ones that are exceptional get marked to '1' at that point. Most don't get rated. This is a really quick pass. Then I make a second pass where I can start making more decisions. A third pass is generally required to figure out what is really decent, worth uploading/printing/retouching. Fortunately, 16GB of photos isn't too much to organize. Around 450-500 images on my camera.