MICHAEL VILAIN  Most of the utilities from this package crash with a bus error on MacOS X 10.4.11 on my PPC. Compiling coreutils 6.12 from scratch doesn't have this problem.  
(Version 6.9)

MICHAEL VILAIN  I've been using MenuMeters forever and switched to iStat menus for the last couple months. I've found a fundamental problem with iStat menus with the most current release of Little Snitch (2.0.1) in that the Little Snitch daemon will start hogging CPU seemingly at random. I ripped out iStat menus and the problem goes away. I think something in the network monitoring of iStat menus is affecting Little Snitch. Since I consider Little Snitch a "must have", I'm back to MenuMeters and my system hasn't had a problem since.  
(Version 1.3)

MICHAEL VILAIN  Greedy is Leopard-only. The developer says that in the application's listing. So, Greedy might be a good thing for you but it's worthless on my 10.4 system. I'll stick with Reader until RSSMenu is fixed.  
(Version 1.09)

MICHAEL VILAIN  This package requires rrdtool which hasn't been ported to MacOS X yet. If you build this application, you'll have to figure out how to compile rrdtool by hand.  
(Version 3.3)