As the GeoRSS blog pointed out, ESRI is now supporting GeoRSS with the Javascript API. Andrea Rosso let me know that you don’t even need to go to that extent to load GeoRSS into ArcWeb Explorer. Just use the find widget and paste the GeoRSS url right into the search box.

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ESRI is only supporting points right now and some GeoRSS feeds don’t work exactly right, but at least it is a start. If you want to use the Javascript API on your own use the location property of the AWLocation object that is passed to findLocation. I’ll post some code maybe later if I get a chance.