Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
Tweet: Over 70% of social sharing is dark &amp; over 50% of web traffic comes from #darksocial. @colinzalewski #LIFTSocial
This tweet contains emotions: 
neutral or no emotion