Terry Tao
Shtetl-Optimized
FiveThirtyEight
OpenAI
Deep Mind
Google Research
Facebook Research
Baidu Research
Microsoft Research
Bad Astronomy
The Polymath Blog
Edwin Chen
R-bloggers
a16z
XKCD
Preshing on Programming
Lambda the Ultimate
Mechanical Sympathy
Bad Concurrency
Cliff Click
Coding Horror
Schneier on Security
CloudFlare
Stevey's Drunken Blog Rants™ (no longer updated)
Paul Graham (more meta than programming)