The good tech picks are already posted, so I'd like to share a bit of a broader scoped list:

- Adrian Kennard's (revk - CEO of Andrews & Arnolds UK ISP) blog: http://www.revk.uk/

- GOV.uk's digital services blog [UX, Design, Govt]: https://gds.blog.gov.uk/

- Canonical design blog [UX & Design]: http://design.canonical.com/

- CGPGrey, excellent youtuber and podcaster [misc. history/politics/sciences]: http://www.cgpgrey.com/

- Martin Graesslin's blog on KWin/KDE [programming]: http://blog.martin-graesslin.com/blog/

- Alexander Brazie's (Blizzard/WoW, League of Legends) blog [game design]: http://xelnath.com/

- Eric McClure's random ramblings [programming, misc personal] - http://blackhole12.blogspot.com/

- EFF Deeplinks [tech politics/activism] - https://www.eff.org/rss/updates.xml

Also on gaming opinions, history and news: Totalbiscuit (soundcloud + youtube) and SuperBunnyhop (interesting pieces on game design incl. https://www.youtube.com/user/bunnyhopshow/videos)