This is a little short. It'd be nice if it had some more detail on the different options for logging and the tradeoffs involved. For example for some apps you want to log to a file so you have something to inspect, for distributed apps you probably want to centralise your logging somewhere - log to stdout and have the logs shipped somewhere else, or send them from the app to another server. This just goes over the basic usage of the log pkg, which is pretty straightforward anyway.