Unne:
Proto: there is no distinct line. The line is very arbitrary and depends mostly on the staffers' judgment and the circumstances (such as in this case, with Sora! being spammy). If you want to debate a specific thread being closed, that's fine and dandy, but debating the general rule of "when is a thread dead?" is pointless as the answer is "whenever the staff says it is." As it should be.