Does anyone know how I could add some information to my page (whether in a meta tag or some other way) to indicate to Google Analytics that a page is targeted to a certain segment?

This is pretty straightforward on my main site where everything is set up in hierarchy by target user so I can just use the URL to filter the data.

However for my subdomains, its a flat structure that's just a bunch of landing and conversion pages so I can't use the URL.

Any help would be much appreciated.

Thanks