That's very useful advice, thank you. I wonder how I might further facilitate the discussion part of it. List of "unanswered questions" (taking advantage of the fact people like to help others in an intellectual setting, generally speaking) and having a "paper of the day" come to mind, among some other things. On that idea of narrowing user segment, I was initially of thinking for it to be just targeted for the "hacker" community (computer science, math, psychology articles seem pretty popular here), but I figure if that does happen it'll just happen naturally without restrictions/limitations.