3.
If it's dead, you may remake a thread, yes. But you can't revive the old one if no posts have been made for over a month. As for the other question I'll need to see the thread. if it's been over a month since the last post, Netto sometimes goes around closing old threads so people don't accidentally post in them. :v He only did that to quite a few threads and didn't take them off the thread index leaving me with his dirty work. /brick'd