Of photos, that is. I use Aperture, so it manages my files for me, which I'm happy with. I'm talking more about projects vs. dates. I've seen a lot of folks extol the virtues of keeping photos by date, and others by subject and/or project type. I've been doing by subject, but now that my library is approaching 100gb and 10k images, I'm finding it's getting a bit too unwieldy. So, how do you manage your library? 1. Split by date? 2. Split by subject/project 3. Something else?