2. Don't Bump Old Threads
The only reason you should be bumping old threads is if you have something of value to add. For example, if there is a GameCube video out diagram and you've found a new location to pull video from, by all means, post your findings on the thread. However, if someone has a for sale thread from three years ago, don't bump it! They probably don't even have what they were selling anymore and there is a private message feature for this reason.