Billboard ads for tech startups in San Francisco are cryptic on purpose

https://www.profitableratecpm.com/f4ffsdxe?key=39b1ebce72f3758345b2155c98e6709c
Old-fashioned roadside billboards are hot these days in San Francisco as tech startups take over the advertising space. But it’s often unclear what they’re selling.
![]()

:max_bytes(150000):strip_icc()/Health-GettyImages-888424682-a011358372b44378bac8e504a2c0ea2a.jpg?w=390&resize=390,220&ssl=1)
