We can readily understand why investors are attracted to unprofitable companies. For example, although software-as-a-service business Salesforce.com lost money for years while it grew recurring revenue, if you held shares since 2005, you'd have done very well indeed. So, the natural question for SiteMinder (ASX:SDR) shareholders is whether they should be concerned by its rate of cash burn. First, we will determine its cash runway by comparing its cash burn with its