Answer
Yes, it is possible to plot Geographically Encoded Objects for Really Simple Syndication (GeoRSS) feeds on a map using ArcWeb Explorer JavaScript 1.0 API. GeoRSS is metadata for RSS documents that describes the location of Web content.
Enter a GeoRSS URL in the ArcWeb Explorer Find widget.
Note:
To use the Find widget, Open ArcWeb Explorer and click Find on the top banner of the application interface.
Replace 'http' at the beginning of the URL with 'feed'.
Example: feed://earthquake.usgs.gov/recenteqsww/catalogs/eqs7day-M5.xml
See Related Information for details on W3C Basic Geo Vocabulary and GeoRSS standard supported in AWX JavaScript 1.0 API.