just as a sort of point of reference, i cleared my cache (it's set to 6MB max in the browser settings, idk how much of that it was actually using) and my app memory went from like 23-26MB all the way up to 36MB.
i'm an ex-blackberry user and i sort of got the app memory/check open apps OCD from that, but i'm learning quickly to forget it and just use the phone.
so as far as performance slipping, should we even use a task killer or will an occasional reboot suffice?