LessWrong
lesswrong.com
You Might Also Like
EA Forum forum.effectivealtruism.org
Effective altruism community. Discussions on doing the most good.
Ribbonfarm ribbonfarm.com
Venkatesh Rao's longform essays on organizations, technology, and thinking.
MetaFilter metafilter.com
Community weblog since 1999. Curated links and thoughtful discussion.
Stanford Encyclopedia of Philosophy plato.stanford.edu
Authoritative, peer-reviewed philosophy reference. The definitive resource for philosophy.
Internet Encyclopedia of Philosophy iep.utm.edu
Peer-reviewed academic resource on philosophy. Accessible yet rigorous articles.
Philosophy Now philosophynow.org
Magazine of ideas. Accessible philosophy for the general public.