[quote name='demonology89']They have a considerably small advantage compared to the people who can post their links on highly traveled websites. I think that's where the edge is going to be, referrals.[/QUOTE]
I think I'm ultimately concerned about what I'd call worst-case scenarios...someone who got all coins possible from one-time only things (registered all games, did the Dragon Age character creator, etc), won one or more twitter contests, and gets at least the 50 referral clicks a day every day. A non winner needs to have 500 more referral clicks just to break even with a case like that. That's not exactly a nontrivial number of clicks.
My concern is that there could very well be at least 400 of these worst case scenarios. 'Course, the real worst-case scenario person would be someone who abuses a very obvious (if you know the internet well enough) flaw with the referral system to generate potentially infinite tokens.