Have you ever sold anything online? In recent years it has become part of our everyday life. The internet is full of sites specializing in selling second-hand items from houses, to cars, to handbags, to children's toys. Listen as Sue asks Chris about his experience. Listen out for these key words and expressions. This podcast is bursting with everyday useful vocabulary. Time wasters Secure payment Stuff Conmen You need your wits about you. Do the benefits outweigh he pitfalls? To knock someone down  - to knock a bit off To be above board To be messed about. To be in awe of someone To be on your guard