Determine how strongly sadness is expressed in the following tweet. Use the scale: 0: no sadness can be inferred, 1: low amount of sadness can be inferred, 2: moderate amount of sadness can be inferred, 3: high amount of sadness can be inferred.
Tweet: Over 70% of social sharing is dark &amp; over 50% of web traffic comes from #darksocial. @colinzalewski #LIFTSocial
1: low amount of sadness can be inferred