Google has run a closed beta for AdSense in feeds for nearly 3 years (that's like a billion internet years) and acquired a company that got feed advertising down to a science but there still is no AdSense for RSS.
So what gives? This a great opportunity to increase distribution of ad . . . read post
For the last six weeks I have paid the price for forgetting to upload updated scripts that had the "nofollow" attribute added to text links. By not getting this done when I wanted I suffered the wrath of Google's PR (page rank) drops for those with "paid" text links.
Though, mine weren't paid, they are a home grown system that I wrote for . . . read post