I'm actually really digging Quora lately. I'm starting to follow/find some really intelligent people and insights, even in non-tech topics I like (e.g. restaurants and baseball).

Not tech related, but about new urbanism, economics and the environment: http://kunstler.com

Check out Howard Kunstler's podcast as well: http://kunstlercast.com

Used to be lots, but I'm aggregating more and more into Google Reader. Why waste time hunting when I can have it packaged and delivered? Fixing things like that is what computers are for.

I like canvas and tumblr. Not usually sources of deep insight, but they're fun.

quora, livejournal, stackexchange

quora, wilmott forums

I make it a habit to visit the following sites everyday: Reddit, DaringFireball, Techmeme, Engadget, Ars, Scriptingnews, thenextweb and ofcourse HackerNews.