why does a post or thread get locked in this forum?
Can be locked by moderators if its a spam megathread.
Can be locked by the admin or mod if its an informative post that does not need replies. This is usually combined with it being stickied.
Can be locked by the creator if they have gotten their answer.
Can be locked by the user if the discussion has become extensive and run out its relevance.
Can be locked by scammers who does not want other members to point out their scam attempt.
What are some criteria(do's or don'ts), that makes a posts or thread get locked?
Do not create a spam megathread. If you have gotten your answer, lock the thread yourself, or it would be reported to the moderators.
Is it a good thing to have some posts or thread locked?
Yes if it fits any of point 1 above. It helps to prevent spam.
- Jay -