Airbnb is making a new effort to play nice with San Francisco, despite a fractious relationship that has heated up in recent months with the vacation-rental company suing its hometown and lawmakers considering new restrictions on rentals in private homes. The company said it is building into its website a way to automatically bar San Francisco hosts who control multiple listings, sometimes a sign of landlords running illegal hotels.
Source: Airbnb bans hosts with multiple listings in SF – SFGate