1. A method for manipulating graphical user interface (GUI) objects displayed on a touch sensing device, comprising: displaying a plurality of GUI objects on a multipoint touch screen of the touch sensing device, the multipoint touch screen providing a primary display for the touch sensing device; detecting one or more concurrent touches at different points on the multipoint touch screen, directly on or in proximity to the plurality of the displayed GUI objects; associating the one or more touches to a first GUI object from the displayed plurality of GUI objects in response to a relevance ranking of touch data associated with the one or more touches to each of the GUI objects; maintaining the association of the one or more touches with the first GUI object despite a presence of a second GUI object having a relevance ranking that exceeds the relevance ranking of the first GUI object if a difference between the relevance rankings of the second GUI object and the first GUI object is less than a predetermined threshold amount; and interpreting the multiple touches as a single gesture for performing a particular operation on the associated GUI object, the operation determined based on the associated GUI object.