Post-Processing

Here's a great example of what a little post-processing work can do for you.

I'm sure there are people who disagree, but I think it's pretty easy to tell which picture is more pleasing. If you're going for something other than "generic nature picture", though, I can imagine why you might go with the left-hand picture.

The picture on the left is very cool (as in, blue-ish) because the day was very overcast. Lots of clouds.