I like iPhoto, but am a little skeptical of using it. My main concern is that it seems to create a second image in the "iPhoto library". For example, if I have a .jpg file in a folder on my hard drive and I import it into iPhoto, it seems that in addition to that (say 2mb) image being in my photos folder it will then create a 2mb file in the iPhoto library. It also seems to create a thumbnail file image too. That I can actually understand. Is there a way to set iPhoto not to create this file? It seems like a waste of hard drive space.