The Open Thread posted at the beginning of the month has gotten really, really big, so I've gone ahead and made another one. Post your new discussions here!
This thread is for the discussion of Less Wrong topics that have not appeared in recent posts. If a discussion gets unwieldy, celebrate by turning it into a top-level post.
It is worth noting that people have explicitly claimed to be following strategy 2 here. Edit: This is far from the only example; just the one I found by searching for "upvoted to".
It would be also interesting to check the difference between comments on quotes threads and comments on substantive posts - at least one person has proposed that quotations are disproportionately subject to strategy 1 voting over strategy 2.