I'm not sure if they are used only for presentation here on tpf, but the borders really bother me. There are some (very few) that work, but in general (and I may get yelled at for this) I feel like they are an attempt to "help" out a not-so-good photo. I just feel like the image should stand out on it's own. I will sometimes place an image on a black field, but that's about it.
As for the photo.. it appears to have a color cast. It's like the rocks around the green plant aren't properly color balanced. I would like them to be more "grayscale"... actually I mean to say "rock colored". I know that sounds odd, but there's a color issue in the background.