Sorry if that's not very clear; but although your app has to run on port 8080, it will be reachable through (e.g.) http://nodechat.ramen.dotcloud.com/ (after bouncing through half a dozen internal proxies, load balancers, discarded Otto's toys, and other funky stuff that you don't want to hear about).
Sorry if that's not very clear; but although your app has to run on port 8080, it will be reachable through (e.g.) http://nodechat.ramen.dotcloud.com/ (after bouncing through half a dozen internal proxies, load balancers, discarded Otto's toys, and other funky stuff that you don't want to hear about).