I wrote about and showed you the ads that played on the Zune HD when you launched one of the free games and applications. Today, while waiting for the Twitter application to appear in the Zune Marketplace I downloaded updates to the Piano, Calculator, and Weather apps. After receiving the Twitter app and launching it I noticed there were no ads showing upon launch. I then tried these three other apps and it appears that Microsoft took the ads out of the apps and just left them in the games.
This strategy makes more sense and is fine with me. Everything is free and the games are much more functional than most apps and thus I expect Microsoft to pay for them somehow. It was ridiculous to see an ad to use a calculator though. You will see the white points of light appear and blink while the app is loading, but at least there is no delay with these apps due to ads.