I've said this before but theres no way the wall gets destroyed in any reasonable time frame (Less than 1-2 weeks), and optimistic projections are looking at a rate of 2-3 months. There isn't any reason to actually buy shares at .0025 right now, even if you value activeminer above that (which I do). Buying shares at .0025 means your money is going to be parked doing nothing for a long time, while you could use that time to trade or even have the money sit at just-dice.
Not everyone will see it this way. Many people realise committing now at 0.0025 means ActM will be closer to realising their plans - only *then* will the price rise above 0.0025. Personally, I wouldn't risk putting my money elsewhere and assuming I can time a re-entry at 0.0025 just before the wall is consumed. I'd be afraid to wake up one morning to a price of 0.004 and be forced to buy back in with a smaller stake than before.