Since I started blogging, the category of graphics blogs has taken off. I also get requests by other bloggers to add links to their sites. In order to reduce over-crowding on my home page, I have compiled a list of related blogs/sites here. If I missed your blog, please email me.
Chart Critique and Makeover
Peltier Tech Blog - Jon Peltier
Excel Charts - Jorge Camoes
Juice Analytics - Juice Consulting
Grafiekadvies - Edouard Buning (Dutch, I think)
Chart News and Commentary
Statistical Graphics and more - Martin
EagerEyes - Robert Kosara
Flowing Data - Nathan Yau
Perceptual Edge - Stephen Few
Visual Methods - Mike Danziger
Visual Design & Analysis - Joe Parry
Design Notes (or Noted) - Michael Surtees
Infographics, Data Visualization
Information is Beautiful - David McCandless
Infographic News - Chiqui Esteban
Cool Infographics - Randy Krum
Simple Complexity - InnovaTech
Sankey Diagrams - Phineas
Visualization Software (blogs)
Chandoo (Excel)
Data Bison - Ajay (Excel)
ggplot - Hadley Wickham
R Bloggers - collection of R blogs
AJP Excel Information - Andy Pope
Online Visualization Tools
Gapminder - Google, Hans Rosling
Many Eyes - IBM