Gkweb has done a good job on presenting us some info's and ranking on software Firewalls. Even his site www.firewallleaktester.com contains one of the best advice for protecting and securing our pc's when connected to net. Thanks for that Gkweb. I was now then wondering if anyone out there could also do the same by testing and ranking the different popular paid and free Defragmenters. Ordinary pc users like me couldn't really decides or choose what's really is the best for our needs and can be confusing since this was not a simple tool for us. Unlike Anti-virus or Anti-spywares... Defragmenter was one of the most important system tools in our pc to keep it running faster and smoother isn't it? Or, maybe, if you know some reliable sites that made some studies and ranking of different free and paid Defragmenters then pls gives us a links, we'll thank you for that. A tests for Diskeeper 10, PerfectDisk 7, PowerDeragmenter GUI with contig, Dirms and Buzzsaw, O & O Defrag, DG-Defragmenter, etc...I don't know the others, and of course the built-in Windows defragmenter. How they differ, advantages and disadvantages, pros and cons, and of course some great advice for pc users.