I have been using Lightroom to manage my pictures, starting back in my PC days. As I get more used to my iMac Lion, I am seeing the wonder of native Apple apps. Not sure why, but recently when I insert my camera's SD card, iPhoto opens and I just add to iPhoto and then I proceed to import into Lightroom. I shoot in RAW and I do multiple pics of same scene and then weed out the garbage in Lightroom. I began to wonder where all the iPhoto info is kept since I could not see the pics as I see them in the pictures folder, but when I asked for iPhoto info, I saw a file with over 100 gig. I am now questioning the best way to get pics into my computer. Should I import into iPhoto and let that be my main library of pics and then export what I want to work with to lightroom or visa-versa. Any suggestions?