This a selection of great websites (blogs) created by statisticians, data scientists, machine learning and other analytic professionals, thought emphasis is more on statistics than data science.
I would add the following ones:
- DataScienceCentral - this blog!
- KDNuggets
- AnalyticBridge - a channel of DataScienceCentral
- R - bloggers
- Stats blogs - you can submit your own blog (RSS feeds)
- AndrewGelman.
And, for a far more comprehensive list, read our article on 2,500 categorized websites for data scientists....
If data is your thing, here's a comprehensive resource list.