I've never used it apart from a very brief dabble a few years ago. It annoyed me due to the way it created so many folders of thumbnails and copies. At the moment I import photos by dragging a folder full of images to my destop then view them in Preview and trash the ones I don't want, rename the folder and put it in my Pictures folder. This works fairly well but it is a bit clunky. Sometimes I'll open a folder and work on some images and store them in the same folder as psd's. Or I might have some RAW images I will want to keep in them. Is iPhoto going to be of much use to me using a few psd's and RAW images or should I just wait till I get a more powerful computer and can run aperture.