IMO even [strictly tech] [everything else] would work, although I'd prefer a more advanced option to filter out stuff.
Looking forward to subscribing to the best sub-hackernewses.
This is the same difference as between traditional email folders and gmail tags.
[1] Evgeny Morozov's coinage, see: http://www.economist.com/blogs/babbage/2013/05/evgeny-morozo...