This question is similar to Should we allow the site to become a support forum for a particular software?, although applies to commercial sites.
I have been noticing many poorly worded and duplicate questions from users funneled to GIS.SE from commercial services. For example, CartoDB is a thrill to use and an amazing WMS, although I am starting to think their method of directing questions to "community support" is inappropriate. After all, our GIS.SE help page states "We are not a GIS Software Support Site". Is the practice considered inappropriate, or perhaps worse--a violation of SE or GIS.SE policies?