I love Firebug, and I especially love sprinking console.log calls around the place, but I hate the way things break when you forget to remove them and your code hits a browser without Firebug installed.

    if (typeof console === 'undefined') {
        var console = {}; // For once not having block scoping is kind of handy
        console.log = function () {};
    };
    
    console.log("It's safe to use console.log");

I feel there ought to be a smarter way of doing this but I just can’t think of one.