well it has to stay open, a lot of people will have the same question about an item, and then its best to be posted in the thread so the seller doesnt get a whole bunch of PMs asking the same question.
its inevitable that any thread will go off topic, its just the mindset of the people on the site, which is fine!! its like everyday conversation, cant be helped
good that you have a suggestion though, all suggestions are brought under consideration. keep em coming!!