It seems the running of this site is a little different to the one im a mod on, we try and close threads that are finished/sold or whatever, that way you dont get plums rooting through about fifty pages to find a thread from about six years prior, and then bumping it!
And its the job of all mods to do this across the whole forum, not just one or two mods per section, not having a pop at anyone here btw, and i hope it doesnt come across that i am.
I was quite surprised to find that some threads can lie dormant for a couple of years, and the item still be available for sale, mainly in the car scene, if a thread is not touched for a long period of time, it means the item has gone, or the user doesnt frequent the board anymore!