Quote from Hackaday website:
" Now you can add as much Secure Digital flash storage as you want to your WRT54G. The added space could come in really useful for storing logs or large dump files from kismet. You could just plug the thing into the wall and let it sniff packets all day. It could also be a small file server running bittorrent while you’re out of the house with your laptop. Most important of all: SD support means you’ll be able to share memory cards with your Playstation 3 and that’s a top priority right?"