Brooke Reams, a Geospatial Analyst at ESRI, has recently started up her own GIS-oriented blog, called GeospatialAnalyst.  It's main purpose is for sharing anything geospatial/GIS related - free GIS tools and data, news, info, ideas, tips and tricks, etc.

You can view Brooke's blog at http://www.geospatialanalyst.com