Delta Keeps Pruning Website Distribution Relationships

Skift Take
Delta wants to control its customers' online and mobile experiences and to drive more traffic to Delta.com so it has parted ways with third-party websites that the airline can afford to cut ties with.
There's a long list of third-party websites that don't have direct access to Delta's flights, and Routehappy became one of the latest victims.
Routehappy, which has a flight amenity database and offers flight metasearch, tweeted that "Delta withdrew its flights from 30+ search sites, including us."
@slimheuy Unfortunately, Delta withdrew its flights from 30+ search sites, including us. You can find them using our Find Your Flight tool.
— Routehappy (@routehappy) June 19, 2014
That 30+ number -