[Suggestion] Thread Closing

[FireMonkeyFun]

I don't know if this has been suggested before, if it has then just close this thread, but I think every member should be able to close their own thread once they get the answer or response they need. I think this would help stop some old threads from getting brought back up for no reason by spammers. If this function is already active then it doesn't work for me.
What does everyone else think about this? I know it wouldn't help spamming much, but it would help it be in more control I think.