1. A sentiment score unification system comprising: a storage device configured to store a sentiment unification module; a processor in communication with the memory device, the processor configured to: receive a plurality of single sentiment scores, wherein each single sentiment score is from a respective scoring sentiment application, wherein each single sentiment score is indicative of a respective overall sentiment of a plurality of sentiment expressions, wherein each sentiment expression from the plurality of sentiment expressions is from a different, independent sentiment source; and execute the sentiment unification module, wherein the sentiment unification module is executable to generate a single unified sentiment score based on the plurality of single sentiment scores, wherein the single unified sentiment score is indicative of an overall sentiment of the plurality of sentiment expressions.