Tracking GA, Scroll-Top, Iron-Router - https://github.com/EventedMind/iron-router/issues/185#issuecomment-25837721

tracking.js

function setPresence (whereAt) {
    Meteor.Presence.state = function() {
        return {
            online : true,
            whereAt: whereAt
        }
    }
}

function trackPageview (path) {
    var settings = Meteor.settings
      , UA = 'UA-XXXXXXX-Y';

    window._gaq = window._gaq || [];
    window._gaq.push(['_setAccount', UA]);
    window._gaq.push(['_trackPageview', path]);
}

Deps.autorun(function () {
    var location = IronLocation.get();
    if (! location) {
        return;
    }

    trackPageview(location.pathname);
    setPresence(location.pathname);

    Deps.afterFlush(function () {
        $(window).scrollTop(0);
    });
});