While using the forum search feature a few minutes ago a certain something caught my eye (considering how emphasised it is, it's quite hard to ignore)...
Simple enough: unless someone knew that it was on-site in advance (which for logical and legal reasons it shouldn't be) they'd have no reason to search for it. This brings the titular query to the fore: why, then, is it one of the most searched for tags? Hell, if I'm correct in that emphasis correlates to how often it is searched for then that makes it the most searched for which exacerbates the problem exponentially.