GracefulAssassin
Mori Hater
Yeah, the folders sucked, and I couldn't figure out how to kill apps. >_>
Press and hold the home key and the task manager will pop up where you can kill each one by one or you can go into Settings > Applications > and then click the tab that says running and you can press a button that closes them all simultaneously or, you can use Apple's "there's an app for that" philosophy and download an app for it if you want that process to be automated.
Fast Reboot Pro and Android Task Manager Pro are my personal favorites. I use Fast Reboot Pro to clear unused processes except for the active window every 15 minutes and/or when my screen is off and I use the other app to clear everything in one shot.
So if my device begins to slow down then I can either turn off my screen to clear everything except for the active app or, if im not doing anything (like posting from my tablets browser like I am now) I can click the ATMP icon in my notification menu and then clear everything at once.