Basically you can have the camera connected to the computer via usb/firewire while you shoot, and the images will be saved directly to your computer. You'd also be able to control all the camera settings from the computer as well. If you're the type to move the camera around a bunch while shooting (different angles, closer, etc) it'll be a bit of a pain unless you 1. Have a really long usb cable, or 2.You have a camera that accepts a wireless file transmitter (but if you had that item, you wouldn't be asking haha).
Totes gonna try this. I already paid for a 2 year membership to Photobucket, but this could be worth it if it saves me time.