Though applications usually do not take up as much space on your iPhone as the contents of the iPod section they can still weigh you down. They take up face space on the pages and an excessive amount can cause glitches and creates long periods of time searching for the applications you want. The best way to avoid this is to continually clear out old applications that you do not use and are just a waste of space. You can easily just remove them from the pages by pressing down on an app, holding it until all the application icons start shaking, and then hitting the little black and white X that appears in the upper right hand corner. Usually this just gets rid of it temporarily and often when you sync back to your iTunes it will reappear. Here is an easy way to both stop it from syncing again and delete it permanently.