This is seriously something I wonder.
Will it lead to an explosion of interest? Or are they simply too late to the party?
Will it have the effect of setting a price higher than the centralized exchanges (given the added value tied to the feeling of security found in trading through an ETF)? Or will it siphon up some of the buy volume from the exchanges as people invest in the Winklevis coins rather than buying new coins (i.e. is it, in effect, a giant dump of coins?)
Has it been a precipitating factor in the lack of demand, recently? Are people holding out to invest in BTC via the ETF so they are abstaining from playing in the market?
In essence, as a thought experiment, say they announce the ETF, tomorrow -- what do you think the price effect will be (not only direction, but amount and duration).
1-2-3... speculate folks. I'm interested in your views.