petal.js

Hub.listen('irc/*', function(Event) {
    if (Event.payload.sender = "Octayn") {
        Event.payload.message = "<Censored for stupidty>"
    }
    Event.next() // The new payload is sent
})

Hub.listen('irc/*', function(Event) {
    if (ignore_list.indexOf(Event.payload.sender) !== -1) {
        Event.next()
    }
    else {
        Event.stop()
    }
}