Sometimes, trying to sell something can be a lot of hard work, a lot of ass kissing, or is just a general PIA.
When you are selling a pin how do you tell if you have a serious buyer or a tire kicker on the other side?
How can you tell whether you are dealing with a blithering idiot before you waste too much time answering questions?
What is your opinion on defining the difference between an intelligent question and a Dumb F'ing Question (DFQ?)?
How do you decide if the prospect actually has the money to buy or if he/she is jerking your chain?