A list of some of the most popular blogs related to Data Science.

Mainstream

• FiveThirtyEight:
  Nate Silver (and other contributor)'s blog


• The Numbers Guy:
  Carl Bialik writing in the Wall Street Journal examines the way numbers are used, and abused.


• Freakonomics:
  The authors of Freakonomics and SuperFreakonomics (and friends) "continue to spout off".


• OKCupid:
  Compilation of observations and statistics from millions of OkCupid user interactions - to explore the data side of the online world.


• Data Ranker:
  Opinion data collected on Ranker.com. Similar to okcupid's blog, but with different types of data.


• Beyond The Purchase:
  About data applied to consumer psychology.


• Data Science & Psychology:
  Data Science applied to Values, Morals, Politics, & things that matter

Machine Learning

• Machine Learning (Theory):
  John Langford's blog (works at Yahoo! Research NYC).


• Walking Randomly:
  Computer Science and Machine Learning.


• The Number Crunching Lifea>:
  Machine Learning and Random Numbers Theory.


• My Biased Coin:
  Computer Science, Algorithms, Networking & Information Theory.


• Building Intelligent Probabilistic Systems:
  Machine learning, statistics, neuroscience, everything - from Harvard Intelligent Probabilistic Systems.


• Marginally Interesting:
  Machine Learning, Computer Science, Jazz and all that...

Statistics

• Statistical Modeling, Causal Inference, and Social Science:
  Mix of technical posts and commentary on statistics applied to social issues.


• Normal Deviate:
  Thoughts on Statistics & Machine Learning


• Inherent Uncertainty:
  A range of thoughts on Learning and Game-playing, Prediction and Decision-making