Free Online Image Editors
There is a new trend in image editing. That is that digital editing tools are fast becoming online software. These software allow you to do the image editing anywhere in the world as long as one has access to the internet. One of the good thing about these is that they are thus not dependent on the type of Operating System used. You can use these online programs regardless of whether you are running Windows, Mac or Linux.
2 popular online image editors are Splashup and Pixenator.
Below is a screenshot of Pixenator. You can use Pixenator at http://www.pixenate.com
Below is a screenshot of Splashup. Splashup is at http://www.splashup.com
These tools may not be as powerful as photoshop. But they are free, online and fun to use.