13. The method of claim 11 , further comprising: presenting a user interface to a user for managing versioning data of mashup widgets.
13. The method of claim 11 , further comprising: presenting a user interface to a user for managing versioning data of mashup widgets. 16. The method of claim 13 , wherein the presented user interface comprises: a list of versions of the mashup widget that a user is able to select for use; a change log that illustrates a set of changes for one of the versions of the mashup widget; and a conflict upgrade providing a list of compatibilities or differences among the versions of the mashup widget.