r-bloggers
R-Bloggers.com is a blog aggregator of content contributed by bloggers who write about R (in English). The site helps R bloggers and users to connect and follow the “R blogosphere”
R weekly
rweekly.org collates useful information from blogs, tutorials and other formats of resources to help the R community become more accessible to everyone
Hyndsight
Rob J Hyndman’s Hyndsight collates many helpful tips and examples for time series analysis, forecasting and more general statistical practice
elevanth
Richard McElreath’s elevanth gives interesting views and critiques of research practice, as well as practical tips for probabilistic reasoning / modeling
Recology
recology.info/ is a useful and interesting blog by Scott Chamberlain, a researcher, software engineer and co-founder of rOpenSci