DOUG ENGELBART  This "Do Nothing Screensaver" still works flawlessly on my G4 1,25 GHz with OSX.5.8 (Leo) and does that since OSX.2 (Jaguar).  
(Version 1.0.1)

MARUKO DRINKING TEAM  Yeah, find the Minimal Screensaver and use that instead. It works great!  
(Version 1.0.1)

MINIMAL DESIGN  link's broken, so I made my own, if you need it, it's there:

http://minimaldesign.net/downloads/miscellaneous/minimal-screensaver  
(Version 1.0.1)

BCWINTERS  Download link appears to be dead... anyone know what happened to this developer? I really liked this epitome-of-simple screensaver.  
(Version 1.0.1)

PIGDAWG  I have been using this screen saver for probably a year now and have just come to realize some of the problems with this saver. I downloaded it because I wanted a screen saver to lock my computer while I'm away. However, since I run a web server and several other processes I do not want a flashy screen saver that will hog the CPU drawing its pretty pictures. This is why I thought this one would be perfect. Today, while the screensaver was running I SSH'd into my box, ran top, and realized that the screensaver was using between 15% and 20% of the CPU. That sure is a lot of CPU time to do "nothing."  
(Version 1.0.1)

ANONYMOUS  Dunno why Apple got rid of the basic blank saver. This little module is good for my needs. Thanks!  
(Version 1.0.1)

ANONYMOUS  Perfect. Ideal for those short times when I'm called away from my desk and I want the screen to blank in my absence but I'll not be gone long enough to merit sleeping the display.

Why did this ability get lost in the Mac OS?

Why people want a screen saver that dances lights and pictures all over the screen when they're away from the computer and not there to see it doesn't make sense to me.  
(Version 1.0.1)

ANONYMOUS  i'm sorry but is it a joke ?  
(Version 1.0.1)

MONGO  So what it when the computer sleeps it does the same thing.  
(Version 1.0.1)

TõNIS K.  Awesome graphics! Just what I needed.  
(Version 1.0.1)