andrewgelman.com
blog of Andrew Gelman and his colleagues about statistical modeling, causal inference, and social science.
Understanding Uncertainty
blog of David Spiegelhalter and his colleagues about public understanding of risk.
R Bloggers
news and tutorials about the best statistical programming language.
Unstatistik des Monats
misleading statistic of the month (in German).
SFZ Applied Statistics
center for applied statistics, part of the Steinbeis Group. Statistical consulting for researchers and business (in German).