Provides list of the top 40 tags. Modified from Journey to be a Generalist.
Q&A for those who study, teach, research and apply economics and econometrics
-- Top 40 tags -- From Journey to be a Generalist select top 40 t.tagname, count(pt.postid) as numposts from tags t, posttags pt where pt.tagid = t.id group by t.tagname order by numposts desc