The Bender Putting Board is a training aid one of the BEST players in the world uses, Zach Johnson!  Now, if he is using the putting board, you probably should too.

A Few Things The Bender Putting Board Will Do For You:

1. Help you with your alignment and face angle to ensure you are properly aiming directly at your target.
2. Green reading - You can see Zach Johnson is the photo provided, he is using the putting board and it is aimed well "left" of the hole.  When Zach set up the putting board, it gives him 100% certainty where he is aiming. 
3. Distance Control.  The Putting Board will ensure your ability to track how far back and through you're stroking the putt which is one component of distance control (the other is force).