Hacker News. A set of top Computer Science blogs. They are written by computer scientists and focus on computer science research;they are of consistently high quality;I regularly read them.
N.B. I have deliberately excluded blogs primarily focusing on computer science education (for another time). The Endeavour by John D. Cook (@JohnDCook) John’s blog cuts across using computing, programming and mathematics to solve real-world problems, pulling in his wide expertise as a mathematics professor, programmer, consultant, manager and statistician. Typeclassopedia. By Brent Yorgey, byorgey@cis.upenn.edu Originally published 12 March 2009 in issue 13 of the Monad.Reader.
Ported to the Haskell wiki in November 2011 by Geheimdienst. This is now the official version of the Typeclassopedia and supersedes the version published in the Monad.Reader.