This is one of my favorite new blogs, http://www.howtogeek.com/. It rocks with tons of great tips and reviews on cool little tools. Lowell does a great job reviewing tools, tricks and tips, and his blog is well organized and looks solid.
Of course there are other great geek'n blogs like LifeHacker.com and Scott Hanselman's blog (and tools). Know of any other blogs that review cool little apps/tools for the PC? I'm always on the lookout for more. :)
Update: Blake Handler (MS MVP) sent me his list of Free Tools for Vista.