Can we do it or do the moderators close off Threads.

Threads are only closed when they have become too contentious to recover or so long that they slow Fluther down to a grind. Otherwise, threads are not closed – you could conceivably answer a question from all the way back to the beginning of Fluther.

If you don’t want to keep being notified of new answers, though, you can always click on ‘stop following’.

Once your question is launched into the Fluther universe, it no longer belongs to you to decide when it is finished or anything else.

It just exists.