Leaders Can Fall Fast on the Internet

Just a few years ago, the industry-leading incumbent in the Internet local search category was IAC's CitySearch.com. It had an apparently unassailable position in local search with no meaningful competition.

Well, times have changed. San Francisco Mayor Gavin Newsome gave a speech earlier this afternoon during which he mentioned a number of leading Internet companies such as Google, Twitter, Yelp and eh, er, um, one other which he couldn't quite remember.