You know I am surprised this has not actually been done yet. In fact, I would say it is only a matter of time. Karzak is right, almost every other medium uses this manner of promotional revenue generation. Though it might not occur in more dedicated houses, I must say that I am surprised MS or larger game houses do not do this - the Sims must have done this though? I never played it, but I would suspect this might be one game for sure that would de able to capitalise on the blurring line.