I was looking for a simple way to work with photos for posting to the Web. I'm didn't want to learn to wrestle with Photoshop and even iPhoto was more than I needed. I just wanted to resize and crop very quickly and very occasionally provide some filters. I found Image Tricks Light in the Mac App Store. It was free, so I gave it a shot. I'm able to drag the downloaded file right into a new photo window, then very quickly resize and crop the image. I save it and I'm done. It's nothing great, but it's dead simple and it's really all I need for this particular purpose.