I recently voted to close a "how do I use Google Sketchup to make a vertical elevation of my house" question, based on Sketchup not being a GIS application and importing DXF not being GIS specific either.
I still think that is valid, but I could be convinced that Sketchup is a GIS tool (rather than a general purpose draw application that has (at a stretch) some "map" type capabilities - you can draw maps in Microsoft Paint if you want, but that obviously wouldn't make general Paint applications on-topic.
Any thoughts and considerations as to how we should treat Sketchup questions, and in particular, when a question should be considered "general computing" vs "GIS"?