don't like that, because they will look like greedy bastids if they implement this.
in plants versus zombis for example you can choose to watch an ad an get some gold or some diamonds in exchange. so everyone can choose to watch it or not to watch it. i like the freedom of choice there. that would be the way to go imo. so you can generate some revenue without pissing people off. it would be a more decent way than the pay 2.99 per month option. i would hate that since i don't wanna get tricked into spending money in order to prevent watching ads.