I've seen some pretty bad ones. Most just glide into obscurity, rightfully ignored. But then there are some that are sneaky. They sound legitimate, or perhaps just enough off center that some judicious education can help. So I try. And they prove that they either fundamentally don't get it, or get combative about it.

 - http://serverfault.com/questions/168752/windows-localsystem-vs-system

Case in point.

Then there are the ones that can only be answered by writing a text book. Those tend to get closed/deleted, so are hard to dig up. Except for a few. The converse to this kind of question are the ones that get actual [textbook-sized answers][1] that act as reference material for the rest of us. 


  [1]: http://serverfault.com/questions/49765/how-does-subnetting-work/49836#49836