Delete A cNet review does not grant any notability. Minor freeware application that has no specific notability or grounds for inclusion as either an article, or on the list of defrag software (talk→BWilkins←track) 17:52, 20 June 2012 (UTC)
A Google search for "smartdefrag blog -softonic -cnet". returns some 210,000 results from a number of different sources and I believe it should be enough to meet both WP:GNG and WP:Notability (software) criteria; also, the article has now no less reliable sources than Defraggler's one so, if these are not enough, Defraggler should be AfD too (Nothing against Defraggler, it's a good tool; just for example! :) ).
Regarding its being "not significant" or "minor", I am currently testing a number of different defragmenting tools and I do believe it is no less noteworthy of other tools listed in List of defragmentation software, offering a combination of features not present in any of the other products.
It's only MHO and, of course, it might be considered original research, but consulting third-party sources the facts should be clear. I think also that the policy "no original research" relative to the SW might be revised in particular for freeware or trialware because, with respect to the SW features, there is no more reliable source than the SW itself: to examine directly the SW is much more effective than any other source analysis. --Parsec09 (talk) 17:57, 21 June 2012 (UTC)