After seeing 31 of my files under the Rejected Files list, I've learned something really important.
These are the common reasons for my pictures being rejected:
Poor color: this image has a low color profile and needs improvement in order to increase its sales potential. You can process your image with color enhancement software, such as Photoshop, giving it the appeal it needs.
Poor lighting setup, poor contrast or incorrect exposure
First of all, I was using Picasa to quickly edit my files, enhancing contrast, warming up colors and the like. Ok, maybe this is not the best software I could use but the important point, I think -correct me if I'm wrong- is monitor calibration.
I don't know how it works in other countries, but here in Spain there is a myth: only Mac computers can display colors as you see them on paper. Be it true or not, the truth is that Mac is able to set up a ICC color profile at system level. And OS X, for example, has a built-in Display Calibrator Assistant, which is very helpful.
So what's left to Windows users? I'm going to try Adobe Gamma, which comes with Photoshop, but maybe there are much better options. Also, I use a LCD display, for which there is also another myth: "colors are more likely to look fainter on LCD's".
Anyhow, if your pictures are rejected because of contrast/lighting/color issues, you might want to check your monitor. I thought my photos were alright after processing them, but in other people's -decent- monitors they probably didn't looked that good ;)
Another lesson to learn and I thank DT for it.
This is a picture I wasn't sure it'd be accepted. It was difficult to adjust contrast and lighting to enhance colors and remove that redish fog you get on most night pictures.
Another difficult picture. Candles where there, I didn't have my tripod and I tried my best... and here they are ;)
Keep it up, people.