If I understand correctly the first month only the presale coins and the 5 million PoW coins will be available. After that point I've no clue how many coins they intend to let into circulation from the foundation, it is apparent that it will vary according to what the price is at and how many coins they need to sell in order to pay for coding upgrades and the like for the following year. The angels/investors/founders won't get their coins until the end of every month, so none of those coins will be used. But I didn't see anywhere saying that the angels/investors/ and founders couldn't take part in the presale. So I believe a number of the big buyers were them so that they could have a nice stack of unrestricted coins. All survey rewards and coins of that likeness will be given out at the end of the first month. They intend for the foundations to be the majority holder for the first five years. I think they will be waiting until January when the release of the first platform will give it a boost in usage is when they intend to give away and sell the most to keep the price from becoming to volatile.