To prevent necro-posting threads, I think unpinned posts should be locked after a certain period of inactivity. Enough said.
I agree, for example http://forums.pocketmine.net/thread...ns-include-op-to-himself.69/page-3#post-39593
I second (or rather third) this as well. It's frustrating seeing a really old thread in the Help section being resurrected. This is my last week in school, so after this week, I plan to just go through the entire Help section to lock threads that are already answered and stuff like that (but it's going to be a pain).
I was thinking about plugin tutorials though. They'll be locked if they're inactive for too long. Threads like them need to go on a long time with sometimes the spaces of nothing happening.
Well if they aren't pinned, then I don't see the problem with locking them, because the tutorial could be old. Also, this isn't locking it after being posted, but rather due to inactivity. If a tutorial isn't up-to-date with PocketMine, or no one comments on it, I don't see what the issue is with locking it, since no one will find it anyways, since it's not pinned