What is the best approach concerning location tags, i.e. tags denoting countries, regions, cities etc.?
This would be a great case for a hierarchical system, but tag hierarchies are currently not feasible (link is from 2010 though). This means we're likely to end up with a whole lot of tags for locations alone.
Should we disallow location tags in general, just allow a subset (e.g. national level and above only) or just let it unfold for now, to see where we get without such a convention?