http://www.techcrunch.com/2007/07/24/key-sites-offline-today-major-sf-power-outage-may-be-to-blame/

Many of the creme of the Web 2.0 World has just gone offline – due to the San Fran Power Outage

Soft of like much of the business world going down 30 years ago – when New York City has a two day blackout