true_INFP - 11:05 pm on May 8, 2010 (gmt 0)

There's absolutely no question that Google is serving up IBAs.

Yes, they are. Who said they aren't?

The thing I said is you can prevent Google from serving them on your site except the very small portion where the ads are based on previous interaction with the advertiser (which means e.g. vising the advertiser's website, not just seeing their ads on Google or an AdSense site).