I found that organizing photos by date (3 month intervals) in a folder on the computer HD is good for me. Then I copy them to a CD to preserve them. All hard drives burn out eventually, leaving you the possibility of losing hundreds of photos, or paying hundreds of dollars to try to recover stuff from the bad hard drive. I finally came to this method after having lost photos and regretted it. Copy to HD every 3 months or whatever interval you feel comfortable with.