San Francisco dot-com bust (2000-2002)
After the tech bubble burst, San Francisco lost tens of thousands of tech jobs. Office vacancy rose sharply and the city's budget swung into deficit.
Downtown landlords cut rents and tech firms consolidated or folded.
San Francisco's economy took several years to recover, but the city eventually became a hub for a new generation of internet companies.
It shows how a tech employment downturn can hollow out San Francisco's downtown; today's layoffs are much smaller but hit the same office core.
