Nice work Jake! You might be interested in extending this study by including your findings with emojis: "Diurnal variations of psychometric indicators in Twitter content"
Some functions that might be useful for such study are: TextStructure , PartOfSpeech
Yes. I also tried in Spanish to no avail. So a relatively easy road to improvement (given that as you say Mathematica recognizes languages very well) would we to allow sentiment analysis in different languages
