GeoRSS feeds:

Global Disaster Alert and Coordination System:
   http://www.gdacs.org/XML/RSS.xml

Reuters World News:
   http://ws.geonames.org/rssToGeoRSS?feedUrl=http://today.reuters.com/rss/worldNews

Earthquakes from USGS:
     http://earthquake.usgs.gov/eqcenter/recenteqsww/catalogs/eqs7day-M2.5.xml

Flickr Images - key words Historic Building:
    http://api.flickr.com/services/feeds/photos_public.gne?tags=geotagged,historic,building&format=rss_200&georss=1

WMS feeds:

http://nlwis-snite1.agr.gc.ca/cgi-bin/ogc/apaq-aapq_wms_e?request=GetCapabilities&service=WMS

http://wms.telascience.org/cgi-bin/katrina_ows?Version=1.1.1&Service=WMS&Request=GetCapabilities

http://www.mapsherpa.com/cgi-bin/wms_iodra?SERVICE=wms&VERSION=1.1.1&REQUEST=getcapabilities