Benjamin's article is bullshit. The only way to deal with crap like that is name and shame, so that the next time a prospective employee googles the company they notice that they have a habit of fucking employees.
Personally, since Fog Creek is also in nyc, I'm guessing theladders.
theladders is in nyc, indeed is in austin/bay area, simply hired is bay area, I'm not sure where dice and monster are