1. Don't forget reserve and trust & offer reserve requirements, i.e. just because every Joe & his uncle gets 500 XRPs doesn't mean most of them won't be sequestered in reserve.
I thought they got more then that? Something like 30k
2. OpenCoin would have to be idiots to deluge the market and undermine the system, clearly they are not.
Can you explain how you know they would not make this mistake? This sounds like a sweeping assumption.
3. Giveaways will proceed at the same time as an orderly XRPs-for-sale market will operate within Ripple, similar to what's been happening until now, where there is enough investor interest to acquire XRPs in larger quantities then given away to ensure a stable dollar-pegged crawling appreciation rate of XRPs.
Has this been announced by OpenCoin? If there is a document or post I should refer to, that would be great to see! I guess it would fall along the lines of a monetary policy by OpenCoin, or the like.