Writing in Polygon, Ben Kuchera makes the case that Twitter profits off harassment. Or, perhaps more accurately, Twitter has no financial incentive to provide users tools to protect themselves from harassment (and Kuchera lists several possibilities and links to more, proving the exercise is, at minimum, conceptually possible).
See also the #askcostolo hashtag, wherein the CEO of Twitter joins the illustrious ranks of Robin Thicke, Qantas, and JPMorgan Chase; all entities that stunningly failed to predict obvious outcomes of Twitter Q&As.
(On a related note, re. that hashtag, does anyone think this Mary Sue headline is indicative of the disappointing new turn that site’s recently taken?)