he pair said Facebook was unjustly enriching itself and being negligent by not only accepting but soliciting ads from scammers. That included efforts to solicit ads from China-based advertisers, despite internal data indicating nearly three-in-10 such ads violated one or more Facebook policies.They also said that Facebook was breaching the contract it made with users when it stated in its terms of service that if it learned of harmful conduct, “we will take appropriate action,” but instead solicited, encouraged, and assisted deceptive advertisers.