The main reason for using Faye is probably the fact that it can run on Node.JS or Rack. This example is running Node.JS, but where Faye really excels is in a R

The main reason for using Faye is probably the fact that it can run on Node.JS or Rack. This example is running Node.JS, but where Faye really excels is in a Rack environment - adding asynchronous functionality to Rails/Sinatra without needing an extra server running Node.