Yeah i saw some ppls bump x week old trade topics or another topics where questsion is already awnsered just to get an +1 post count

So i think it would be cool to get a option where we can Close our OWN topic's with a Reason

So
Example:
Tradetopic: O jah N xxx
then someone give me an offer i will trade then i can close the topic with reason: Trade done
so ppl cant post anymore there...

I hope you understand my bad english hahaha ^^

This has already been suggested before several times and was declined.
It will not happen.

Also would vote no

This is a privilege for the mod team, it won't be changing.

Beyond that it can be easily abused.

Despite it being a very useful and good idea. It cannot, and will not, ever happen.