Jaso: the re-assessment has convinced me that I'm not learning any more. I did once upon a time, but I'm not now. That's why I'm largely stopping reading, certainly stopping reading the comments. I'll still read the links submitted by people I've learned to trust - people who have similar interests to mine.

I've never used Reddit, so I can't comment about that.

ADDED IN EDIT: Just to clarify a little - there are still people here from whom I can learn a lot, and I'm sure there are still comments and submissions that I can learn from, but they are drowned by stuff I consider irrelevant, repetitive, uninteresting, or otherwise not something to learn from. The gold is hard to find now, the returns are no longer worth the effort.