Maybe you haven't purchased image editing software yet, or maybe you're away from the computer that has it, but you've got some photos and you have access to the web. What do you do? I like picnik.com in these situations. Since I carry my camera in the car all the time, it's not unusual to capture a great image on the way to work. Eager to share it with the world before I get home, I'll upload it to picnik and edit it there. Below are just a few examples of the many options available to you there.
For this first image, I used picnik's auto-correct and sharpening functions. It's a pretty true representation of the scene I saw. Then, as I often do with snowy or cloudy scenes, I converted it to black and white:
The one below is using their "hdr" effect.
