I'm doing beta testing now of a new portfolio system created by Deviant Art.
One of the cool things about it is I can post client images with a password that only they can view. This should prove very handy when sending proofs to a client.
I generally shoot a few hundred images in a session. Out of those about 10% go right in the trash (closed eyes, flash failed to fire, etc). Out of the remaining images 10% or so really rock. I upload those proofs for the client to choose their favorites (usually 10) and then do full processing on the client favorites making them perfect for prints and the web.
Check it out here: