2. The method of claim 1 , wherein the sending the data for display in the user interface to present the summary of results further comprises presenting, in a first section of a plurality of sections of the user interface, a total number of instances of the textual data and a percentage of the total number of instances of the textual data that fall into one or more sentiment categories according to the categorizing the textual data.
3. The method of claim 2 , wherein the sending the data for display in the user interface to present the summary of results further comprises presenting, in a second section of the plurality of sections of the user interface, a break out of the total number of instances of the textual data across multiple sub-domains of the target domain, the break out indicating a percentage of the total number of instances of the textual data within individual ones of the multiple sub-domains that fall into the one or more sentiment categories.