Has anyone managed to insert adsense code into the RSS feeds of their WPMU site *without* using Feedburner? I've been looking into it and as far as I can tell, the only way to do it is for Google to 'manage' the feed - in other words, you need to proxy each feed through their Feedburner site and Google insert the ads themselves. They don't provide you with the raw code to do it yourself.
I found an old plugin on Wordpress.org to insert the adsense code, but I believe this is the old adsense code prior to Google purchasing Feedburner, and the adsense code no longer works.
Hopefully someone here has had better luck than me.