I just said that "Word of Mouth doesn't work". If you think a "Like" or what ever on FaceBook will drive thousands of additional subscribers to this game, well go for it. I'm just saying if AH doesn't care to advertise it's product, why should the community of players. In my world, a business sets a budget to produce it's product and that budget generally includes advertising.
Having spent about 20 years in marketing and advertising word of mouth is the best (and worst) form of advertising available to a business. Studies have shown that an individual consumer will express their satisfaction (or disatisfaction) with a product or service to eight other people.
Due to the costs involved, mass market advertising is only effective for large scale (mostly) consumer oriented businesses. In this environment you'd be lucky to reach 1% of people who see the ad, have a computer and are interested in WWII airial combat simulations. That's 1% of people meeting all three conditions. Target marketing to a niche audience could bump that number up to 6% or maybe even higher. Furthermore, the only way mass market advertising works at all is through saturation repetition making the stakes much higher.
Having been involved in Internet advertising I found that even if I reached my target audience through traditional media (radio, television, print) the likelyhood of those people acting to click on the website once they were back at their computers was greatly reduced so I wasn't able to even pull the 1-6% numbers. Online advertising had the greatest effect as people could immediately act on impulse after seeing my message. Response rates to specific campaigns produced numbers exceeding 20% and rarely fell below the 6% range.
The confluence of these realities are why every large and small company in existance now rely to a great degree on social media to spread their message and to monitor consumer sentiment.
I'll contact HT on your behalf to try to work out a deal whereby you get 10% of the proceeds for one year from people who sign subscriptions to AH due to prime time TV advertising. I dare you to put up the money to run those prime time ads on major networks.
BTW, here's all you need to get started:
http://www.adweek.com/news/television/their-prime-broadcast-spot-costs-soar-132805 I can hear you counting up all those subscriptions already.