I keep my contacts backed up to icloud as well as most everything except I use itunes for my music and videos. Notes are backed up to my Yahoo account. Most of this was because of how it was set up when I got my first iphone, before icloud was created and I just haven't changed everything over. But my needs are pretty simple compared to most people and I just haven't bothered to catch up to all the changes. Initially I hesitated because of concerns over sharing my info over the cloud, later I just wanted a copy of my music on my pc. Now that I am really comfortable with things, well, if I was making the decisions now, I think I would put it all on icloud.