Trying to think of what's not on this list:

• The EA forum sometimes has insightful posts, mostly EA news

• Givewell and Open Philanthropy Project blogs

• http://nickbostrom.com

• /r/slatestarcodex, /r/LessWrong, /r/HPMoR, /r/smartgiving, /r/effectivealtruism, /r/rational

• Thing of Things (Ozy's blog)

• Topher's blog URL is now http://topherhallquist.wordpress.com

• http://thefutureprimaeval.net is a group blog by a few ex-LWers I believe

• You could probably dig up more by looking through the blogrolls of the blogs you've already identified. For example, Scott Aaronson considers himself part of the rationalist blogosphere and is listed on the SlateStarCodex sidebar.

• Andrew Critch's blog is great

• PredictionBook, Omnilibrium

• Of course there are lots of Facebook groups (especially EA-related Facebook groups) and Facebook personalities, notably Eliezer

• Somewhere I got the impression that HBD Chick and Sarah Perry of Ribbonfarm were LWers at some point. There's also the "post-rationalist" community which includes sites like Melting Asphalt.

• Scott's community map

Many of these update infrequently, making it bothersome to check all of them. I'll bet it wouldn't be very hard to create a single site that lets you see what's new across the entire diaspora (including LW) by combining all these RSS feeds in to something like http://lesswrong.com/r/all/recentposts/ Could be a fun webdev project. Register a domain for it and put it on your resume.