I've heard it's not a good idea to defragment a solid state drive - Though Windows 8.1 allows you to configure your optimization utility (defragmenter) for SSDs, offering a trim feature suppliment. Windows XP, Vista, and 7 however don't have have that option without custom software included with your SSD (Presuming it does come with software), and Microsoft won't likely provide a Windows Update that fixes it. If defraggler offered an alternative option for trimming/optimizing solid state drives, I would definately utilize it, and recommend it to friends.
