Board Thread:Questions and answers/@comment-38565009-20200518150717/@comment-26431461-20200518155813

Necroing threads is when you post on a thread that is very old. Usually these threads have gone more than a month without activity.

If you necro a thread but provide something constructive, it's really not something punishable, but if you just bump a thread with an unhelpful reply, then yeah it's a problem.

But either way, it is best to always make a new thread to be on the safe side and you can mention in the post that it is a follow up to a previous thread.

EDIT: I should mention, old threads also contain obsolete information. If you bump a thread that is years old, people might get confused and think its contents are current. You'd be surprised by how many people do not check the dates of threads, which is why this necroing rule was probably added in the first place. So again, if you want to add to a thread, first check the date. If it's too old, then make a new thread.