Talk:Shadow memory

Purpose of shadow memory
There isn't any mention of the purpose of employing shadow memory. Can somebody fill this in please? Cheers Wikidsoup   [talk]  20:10, 28 April 2009 (UTC)

I concur, this article deserves a "Worst article on Wikipedia award", nothing at all is said about WHY this technique is used... 130.241.209.200 (talk) 15:59, 2 February 2012 (UTC)