BRIGHTi GeoFeeder
GeoFeeder is a new tool making it very easy to convert proprietary and/or complicated GIS formats into GeoRSS. I don’t think there’s an simpler way to transform a ShapeFile into GeoRSS, which in the words of the GeoFeeder site is “the current defacto standard for web mapping”. It’s really cool to see a tool so clearly target GeoRSS.
There are other tools which do the same — notably Safe’s FME, which does support many more formats, including raster, but at a comparable increase in price. FME is built on gdal/ogr, open source and comparably more difficult to work with, and not yet supporting GeoRSS .. maybe we can do something about that at FOSS4G next week?