Comment I would care, but... (Score 1) 505
...I don't.
I have five machines ranging from 4 to 12 GB. I also don't keep applications open long enough for "degradation" to play a role; closing an app gives the OS a chance to play memory organizer just as surely as rebooting a machine (sorry *nix fanboys who brag about all of your oh-so-important 'uptime' when rebooting takes, at worst, a few minutes) gives it a fresh pallette.
I don't CARE about memory usage. Just isn't on my radar, anywhere.