What's the HTML code for AdSense for feeds?

[eSite]

Hi,

I'm going to distribute a template for a blog publishing tool.
I already implemented AdSense on the template and I would like to also implement AdSense for feeds.
Unfortunately I don't know what the AdSense for feeds code is and I can't find any blog using it.

[leadegroot]

I beleive Google offered it for trial some months ago, but nothing more has been heard from them about it since.
(Darn it, I want to use it too! :( )

[theRealairness]

As far I remember, you should also have 100 subscriber to the feed to qualify.