USGS ShakeMaps Feed
Demo of GeoRSS in OpenLayers
Example:
To try this out, entering one of the following URLs in field and press the "Load Feed" button
http://www.accidentmap.com/en/georss/
http://earthquake.usgs.gov/earthquakes/shakemap/rss.xml
http://newsrss.bbc.co.uk//rss/newsonline_world_edition/science/nature/rss.xml