At YCNYC the AirBNB presentation showed the startup curve and dreaded "Trough of Sorrow" (http://adam.heroku.com/past/2008/4/23/the_startup_curve/ http://adam.h

At YCNYC the AirBNB presentation showed the startup curve and dreaded "Trough of Sorrow" (http://adam.heroku.com/past/2008/4/23/the_startup_curve/ http://adam.heroku.com/past/2008/4/23/the_startup_curve/). It's definitely hard to overcome.