We've posted several times about the coolness that is MacFUSE from the Mac group over at Google. Well now comes yet another cool application of the basic technology: SpotlightFS which unites Spotlight and MacFUSE to create genuine smart folders, whose content changes based on search criteria. Unlike OS X's built-in Smart Folders which "are really plist files with a .savedSearch file extension," SpotlightFS produces true folders which "can be used from anywhere--including the command line." Given the recent resurgence of interest in Smart Folders, this looks like an even better way to do it.
SpotlightFS is a free download from Google and requires MacFUSE.
[via Official Google Mac Blog]