It's an imperfect world, and we all take imperfect photos. PhotoPerfect Express is a free and simple program to clean up your less-than-perfect photos. Don't look for many bells and whistles in this software, because you won't find any. Choose a photo, then select the method of image optimization you want from the right-side of the screen, and save the resulting cleaned-up photo. In two of the methods, a watermark appears; if you want to use those methods without a watermark, you have to buy the for-pay version of the program. If you want additional editing features, you'll have to pay as well.
No, PhotoPerfect Express isn't a power tool, but then again, it's free. And if you want simple photo cleanup, it's worth the download.