PC World has published an article called 101 Fabulous Freebies which is a round-up of apps, web sites, and services that you can use for free. Their "outrageously useful" tools are broken up into categories like "Tune Up," "Find It," and "Lock It Up," and they're fairly well-chosen. It also includes some welcome round-ups of RSS readers, webmail, blogging tools, and video sharing sites.