CNET Labs is one of the leading independent reviewers of technology. As is important in any scientific test, CNET needed to eliminate variables that could skew comparisons of computer systems, and addressing fragmentation was a key consideration for them. They know that a fragmented desktop or laptop will perform worse than a defragmented one, potentially invalidating a test. You can view the process methodology for desktops and laptops. Earlier this year I had a long conversation with the Director of their test labs, and while I can't disclose the nature of their evaluation of various defragmentation programs, their product needs are similar to what your defrag software requirements would be. CNET Labs has been a member of the Diskeeper family for years, and we are certainly pleased to support their upgrade to Diskeeper 2007!