Shapefiles are not supported for direct upload to arcgis.com.Thanks, Mike
As I mentioned in an earlier post, we are working on the ability to add data over the map without having your own ArcGIS Server, but that functionality is not available yet.
The release of this functionality is tied to the ArcGIS 10.1 release. So it's months away. Perhaps Q1 2012. There will be a beta version of ArcGIS.com available, but only for a small selected group. I don't know what it takes to get selected. I'm guessing there will be some information available at the User Conference in San Diego. I don't know of anyone who will host services for you.Thanks,Mike
Retrieving data ...