So I'm slightly biased here, because my actual job is to sell advertising for one of the major online networks, but that also gives me a unique perspective on the subject of growing this game. I spend a great deal of time focused on two things in my life, how to make my online clients profitable and how to win at Buzzerbeater.
I came in off of a banner advertisement on RealGM.com. Before BB I would spend time as a "GM" of one of the NBA squads and run their Trade Checker, non stop.
I would increase the online presence to all basketball related sites that allow advertisements in their forum area. This gives the game the best chance of being introduce to a loyal audience. The forums typically have the highest face time per session. We can help to do this "virally" by chatting up Buzzerbeater in our local forums. This creates a buzz about the game and the brand itself. I realize there is a cost to buying ad space, but this is where most of us spend our time (outside of BB of course).
I don't use Twitter very often but this is a great way to broadcast information. A successful post can get "re-tweeted" outside of our limited network and picked up by basketball fans around the globe. Its a growing form of communication, and it extends to the mobile world. Many of us are plugged into social networks like Facebook, Twitter, MySpace, and countless others. Talk it up in those networks. Consolidate existing groups and get those groups tighter.
So advertising has a cost right? The other thing that I think should be done to help BB to grow is to require a Supporter purchase at some point during the game. Maybe the lowest two divisions per country could be free, but to advance beyond you must purchase the supporter feature? At a minimum it takes two seasons to advance out.
If you're still playing at that level for free, I would encourage all of you to consider investing in a Supporter package.