In the end, though, I found myself using MemMaid less and less - it was great for me to troubleshoot issues, but day-to-day it didn't really feel necessary. I figured, "let the OS manage the program memory - that's it's job, not mine." I still use Spb Plus' drop-down menu and today screen icons, though.
Another thing that aggravates me is I'm suddenly wondering about memory leaks - I'm hardly qualified to even say what a memory leak is, much less diagnose one. I can reset my Treo and watch the available program memory inexplicably creep downwards. I can close every open program and still not see as much RAM come back as was given up in the first place. In fact, for now I've decided to remove the program memory meter from my today screen - it was just giving me fits. Better to just use the phone and deal with problems as they crop up and not worry so much about program memory.
Or at least that's the opinion I'm at this week. Next week I may jump right back into micro-managing my program memory. The sad state of things is that there simply isn't enough program memory in the Verizon Treo 700w to satisfy my needs. I admit that it's highly likely that I'd have that complaint no matter how much RAM Palm packed in there, but still - this feels pretty cramped. It's nice to know that if I need to, I can dig in there and clean stuff up every now and then.
Though it pains me greatly to have to say it, perhaps the best program memory manager I have is my new "Battery Cover with reset hole" (buy at TreoCentral Store). It gives me quick and easy access to the soft reset button - sometimes there's just no substitute for a reboot.
Update: My compatriot Mike Overbo confirms that I am indeed not qualified to diagnose a memory leak. He says:
Apps and services can claim more RAM from the heap the longer they run. A memory leak is RAM that an app is holding on to illegitimately -- it's allocated but never or no longer used. If it's allocated but in use, that's ok. Your RAM creeping down like that doesn't necessarily mean it's a memory leak.