Yes, there are two ways to upload two images a day.
1. join the Cadre (they get 2 uploads a day).
2. Upload you first image really early in the morning and the last at night. The wait is actually 20 hours, that's why this is possible.
Other than that... All I can tell you is that caedes.net is not meant to be a huge photo album where you store all your images. We want to have good conversations about the images and take time to share each one. Letting people upload as many images as they want would be like allowing someone to bring an unlimited number of things to show-and-tell. It wouldn't be fair to the other students.