There are several photographers on the forum who have mentioned using Lightroom. This might be the app they've been waiting for. Photosmith organizes photos on iPad, syncs to Lightroom | Photography | iOS Central | Macworld
Tried it and found it really nice. If you use lightroom and have an iPad this is great for backing-up, rating and keywording on location. Thanx for sharing
I'm hoping they will come out with a plug-in for Aperture. I just went to their support site, and they've got a suggestion/voting poll set up for new features. I'm not the only one who wants some Aperture love.