Editor's note: Steli is the Co-Founder / Chief Hustler of ElasticSales and an advisor to several startups and entrepreneurs. You can follow Steli on Twitter here.At ElasticSales, we’ve had the honor to create and run sales campaigns for some of the hottest Silicon Valley startups today. We’ve also consulted with dozens more each week to learn the challenges their sales team face. We realize we can’t work with every startup just yet, but we have seen the same, avoidable mistakes made by many young companies as they conduct their sales campaigns.Below are “7 Deadly Sales Sins” committed by many startups today. Some of these may sound familiar to you, but by identifying and address these mistakes, you will help your company succeed. read more..