Originally Posted by downeaststudio
Go into your settings menu then and look at how many of your apps are still running even AFTER you think you have exited them... Then come back and tell me whether or not you still need a task killer... Some of the better apps will terminate after you exit them, but some don't... The ones that don't will eventually build up and cause your phone to crash...
Do some research. Android manages its memory very efficiently. I don't use task killers and my phone does not crash. There are many reasons to NOT use killers. They create more problems. Google is your friend, use it.