The landscape of referrers is constantly shifting. New referrers emerge and others change or disappear altogether. Therefore, Parse.ly may choose to reclassify a referrer at any point. The reclassification will only affect your Parse.ly data moving forward from the time of the change. It will not be applied retroactively to your historical data.
August 6, 2019
Before this date, the following referrers were classified as Other. From this date forward, they are classified as Social.