Often the things I write would be equally suitable for all three, so I thought I'd point you at two recent CfEA posts, one on an interesting project called Waiting and one on some thoughts for Real-time Ego-centric Isochronic Maps.
(If you're being completist about your e-stalking, you'll also want to subscribe to OpenGeoData and PintCast - the latter is a new podcast with Steve Coast and friends that is still finding its feet, and is yet to buy a good microphone...)