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.
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.