Add File Geodatabase Feature Classes to ArcGIS Online

Idea created by TViveirosTrial on Oct 12, 2011
    Why can't you add file geodatabase feature classes to ArcGIS Online?
         Currently, when adding data to ArcGIS Online, you're provided with the following options:
         "Locate the file you want to import. You can import a zipped shapefile (ZIP), a comma or tab delimited text file (CSV or TXT), or a GPS data file (GPX) with up to 1000 features in it."
         I think you should be able to locate a file geodatabase feature class stored locally and add this to ArcGIS Online.