All depends what you want the end result to be - in the right circumstances they work just fine
Yep, it's a useful tool.
A good designer knows when to use what tool, and he knows that because he knows the inside and outside of his toolbox. What's useless in situation A can be your livesaver in sitution B.
![[Linked Image from siemons.org]](http://www.siemons.org/foto/yarp.gif)
