I assume these are the apps you use most often. When you open an app that you use less frequently (e.g. Stocks or Clock), do you manually remove it from the mul

I assume these are the apps you use most often. When you open an app that you use less frequently (e.g. Stocks or Clock), do you manually remove it from the multitasking bar once you're done or do you leave it there? Don't apps build up in the multitasking bar to a point where it is faster to close one of those apps and access another from the home screen, rather than using fast app-switching?