First of all, let me quickly launch my installation for you. We have several domains, and for this reason I use a tracking code that simultaneously sends traffic to two different profiles. One profile tracks a specific domain, and the other is a multi-domain profile that collects data from all domains. Here's what the tracking code for my domain pages looks like. UA-XXXXX-11 - multi-domain account:
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-XXXXX-1']);
_gaq.push(['_setDomainName', 'none']);
_gaq.push(['_trackPageview']);
_gaq.push(['t2._setAccount', 'UA-XXXXX-11']);
_gaq.push(['t2._setDomainName', 'none']);
_gaq.push(['t2._setAllowLinker', true]);
_gaq.push(['t2._setAllowHash', false]);
_gaq.push(['t2._trackPageview']);
(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
</script>
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