Would be great if you could create a link to just the new images for the day. You see that there are xx number of new images, but when you click on the link it takes you to all of them for the week/month (however you have them set-up). While I try to scroll through them by date, would be nice to just go directly to them and then if you wanted to see additional ones, go through the remainder. Just a thought
I also usually browser the "new images" gallery by date untill I get to an image I've seen before. I think that this works better for me since I might miss an image if I don't view it every 24 hours.
I agree with Caedes on this. I don't get the time to visit the site on a daily basis, so if the new images would only show the ones uploaded in the last 24 hours I'm very likely to miss some of the new ones.