Texture convstions

This may have been discussed before is so I apologise. I stumbled on this and alot of poeple say it helped I was wondering if anyone here has tried it and if even in theory if would work like they claim or if there just seeing what they want to see. 
http://www.youtube.com/watch?v=uYbVx1Zz3Us&feature=channel_page

http://www.youtube.com/watch?v=uYbVx1Zz3Us&feature=channel_page