[ricardobeat]

In case anyone is looking for a debug utility, not for archival logs, look no further than http://github.com/visionmedia/debug. Named loggers, nice formatting, easy to use and you get timers for free:

    require('debug')('controllers:something')
    debug('doing stuff', someObj)

then selectively enable it in the command-line with

    DEBUG=controllers:* node index.js

Express has debug built-in, so setting debug to express:* will turn on logging for it's internals. Just saying this 'cause I wish more tools came with built-in logging :)