For me the route was via StackOverflow (SO). I looked for a question like what other sites are there like SO for gaining some real world wisdom.

I've always found good stuff with this technique - It's like poor man's machine learning algo applied to oneself. People who liked this item also liked...

One such thread of my current favorites looks like:

SO --> HN --> Reddit --> Less Wrong --> Yudkowsky's blog --> Marginal Revolution blog