The following are blogs I value and visit on a regular basis:
43 Folders - Productivity http://www.43folders.com
Life Hacker - Productivity http://www.lifehacker.com/
Working Smart - Tools and Technology for Business http://michaelhyatt.blogs.com/workingsmart/
The Daily Rotation - Technology Headlines from Around the World http://www.dailyrotation.com/
Round the Rock - Kayak Circumnavigation of Newfoundland http://www.cackletv.com/wendykilloran/
If you have a favorite blog please comment below.