 Proposition E would shift the tax burden from 10% to 90% of San Francisco’s businesses and generate an estimated $28.5 million in annual revenue to the city.Among its advocacy efforts in favor of Proposition E, sf.citi circulated a video for Yes on E. The video featured Twitter chairman Jack Dorsey, Airbnb CEO Brian Chesky, and Twitter and Obvious Corp. co-founder Biz Stone.The video was featured on Youtube’s homepage.