This is interesting feedback. I always thought that ads being unobtrusive and not part of gameplay would be the saner choice. In my mind, when games ask you to trade watching an add for some kind of in-game benefit or currency, that feels like an unreasonable demand. The ads impinge on the gameplay. The way I've set up the site, ads are tucked in their own corner and should never affect gameplay (though there have been instances of ads spilling over the powerup bar, I'm working on that). Thanks for sharing!