I've made an rss feed http://www.tommedley.com/ccc/rss.xml. As far as I can tell everything in it is ok, but when I run it through http://www.stg.brown.edu/service/xmlvalid/, an XML validator, I get lots of errors, like line 2, rss.xml: error (1102): tag uses GI for an undeclared element: rss Code (markup): . What am I doing wrong? Tom