I recently downloaded some freeware called PhotoScape, and I am having so much fun with it. While I have been an avid user of Adobe Photoshop for the past 4 years and enjoy the more technical things you can do with editing a photo, I have actually really been enjoying the simplicity of Photoscape for a quick cropping of pictures, changes in colors, hues, adding borders, splitting pictures, making collages, etc...
You should download this and start having more fun with your blogs. :)
Besides, it's free. :)