Feed subtitle LastModified http://diveintomark.org/tests/client/http/lastmodified.xml 2006-01-18T00:00:00Z Example feed author http://url.example.com/ f8dy@example.com 2006-01-18T00:00:00Z 2003-07-22T21:10:26Z http://example.com/entry/id/LastModified <p>This is example LastModified, testing If-Modified-Since/Last-Modified support. After initial request, client should send If-Modified-Since header on request with value of the Last-Modified header that was returned on the previous reply. Subsequent reply of HTTP code 304 indicates the feed has not changed since last polled.</p>