I'm glad you like Tasker, Tony! I really need to install it again and see if I have any use cases for it. When I was using it I only had one rule set up and I felt like I was wasting the potential of the app
There's a ridiculous number of things the app can do, but I was only using it to quiet my phone at night.
Still, it was nice to be able to set up a rule that said "if my phone is on its dock [specifically on the dock, not just charging], AND the time is between 11pm and 8am, mute the ringer."
There's another program on the market called Locale which was out first, but it always seemed to be geared towards location-based phone control, whereas Tasker takes action based on pretty much any cue.
Bitt has all the memory stuff covered. It really isn't something you need to worry about. I have all kinds of crap running all the time, but it hasn't slowed my phone down.