It appears that tag searches are currently not working.  Clicking on a tag returns 124 pages regardless which tag was specified.  Searching for http://wow.curse.com/downloads/wow-addons/tags/wotlk/default.aspx or http://wow.curse.com/downloads/wow-addons/tags/grind/default.aspx return the same results.

Thanks for the report.  This was fixed in yesterday's rollout.  Please let me know if you find any anomalies with the tag searching.