SELECT tag FROM blogtags
WHERE entryid =
SELECT e.title, e.id, COUNT(t.entryid)
FROM blogentries AS e, blogtags AS t
WHERE t.entryid
AND t.tag IN ()
AND e.id = t.entryid
GROUP BY e.title, e.id
HAVING COUNT(t.entryid) > 1
ORDER BY COUNT(t.entryid) DESC
LIMIT 5
...display related entries
