These are some sites that I find useful/fun/engaging.
Indexhibit
Graphic Hug
Design Observer
Banksy
PolitiFact
Brand New
ffffound
today & tomorrow
The Scout
Pop!Tech
Design Mind
PSFK
Behance
Bleep
Rebrand
Typophile
Kuler
This is some of the company I keep.
Kriston Rucker
Khoi Uong
Steph Goralnick
Orna Navon
Milena Sadee
Tomas Celizna
Jenny Eggers
Andrew Kibble
Hlynur Atlason
Philip Habib
Martin Wonnacott
Thomas Bossert
Chris Ro
Russell Austin
Updated January 2010. Enjoy.