The numbers were up both on last quarter as well as a year ago. The company has been introducing a number of other features, like Topics, to spur more subject-based, targeted consumption of Twitter. The new product feature is part of a bigger, longer-term shift Twitter has been making to position itself not as a social network, but a place that people go to discover news, information, entertainment and more.
Cofactor is a large, structured listing of people, places, and things. Here you can find the description of each topic.