I think it’d be a good idea to have a ‘Tips for all users’ type category on the forum.
That would basically be a combo of both the ‘Tips for buyers’ and ‘Tips for sellers’ category. I don’t see what much difference it will make, though. Can you clarify why you would want that?
Put all the oft repeated questions in one place?
It would actually stop the need to repeat the same post in tips for buyers and tips for sellers if it applied to everyone.