What is the one piece of sales or marketing advice that sounds strange but actually produces good results for you? Mine is: A complete ban on new customers who contact me out-of-hours i.e outside Mon-Fri 9-6pm. Anybody who has called me outside those hours has been trouble. Sounds like a gross generalisation but it's true. Complete ban on bank-holiday callers. Again some of the most troublesome customers I've ever experienced have called me on some sleepy bank holiday weekend. (btw, I own an IT services company) So what is your most counter-intuitive sales or marketing advice?