I see your one ad. How have the mighty fallen? Don't you know that one ad leads to another? And then another. And then another. Where will the adness stop?! I am heartbroken that you have taken this giant step backwards. Now you will have to attend AA: Advertisers Anonymous. See ya in 12 weeks!
Well, the deal was Y! was going to do it in the order presented in the feed, no matter, what. Seems to defeat the purpose of a pubDate field, but I decided to go with it and list things in the feed in top down, newest first order.