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I'd try and get some data on this to inform my decision Most sectors will have multiple variations on their name. Use google keyword tool to help you identify all these. Then use excel to generate a list of all your sector variants + region and your sector variants + city. Then look at the data and see which is going to give you the search volume and proceed that way. It may be that you will have to add in city and village as well. I imagine florists are often searched for on a very local basis whilst chemical plants are often searched for on a national basis. Psychologically we prefer a simpler taxonomy - but so do your competitors. If a more complex taxonomy justifies the complexity and delivers the additional traffic......

I managed to auto-resolve that. I tried to delete the question but looks like I can't. So, if that can be useful to someone else, I had an iframe in the page with a <title>Untitled document</title> (!) which was causing that.