If somebody wants to make a list of the refunds I need to make, that would be helpful. I plan to make a list myself before I issue refunds to people who purchased after the deadline, but it would be nice to have a publicly vetted list to double-check against.
I had hoped to not refund the people who sent before the deadline but didn't make it into the block chain until after the deadline, but that would make calculating bonuses for those people weird (negative bonus?) so I think I'll have to refund those folks too, as implied by some of the calculations I see earlier in this thread.
The advertisements for buymastercoin.com are a bit of a grey area, but after talking to the site owner, I'm leaning towards treating those just like other investments, to keep things simple.
I have a suggestion regarding which transactions to refund.
All transactions where the blockchain.info received time shows a date in September should be refunded. This excludes any 0.00006 BTC transactions.
https://blockchain.info/tx/4c097244046e1b1fa23edc7ad8efd10babbe7c0caa13925c33097b84dae57af7https://blockchain.info/tx/8370e73f7d57a80c0191a08f068677cb3e1f2c735dc77d1b43dc8beabca44b97https://blockchain.info/tx/9215723f2f4069e783796bb6e5b333ed464ae483376bc24f9167cddafbac31achttps://blockchain.info/tx/8d3e15a6aa391ac59c4d8ae12d1687f1266bc53053bcb28ac6fb408986f89865https://blockchain.info/tx/710ad508fd09a6a9d66c1c03321453a5a621b89a3591bb0b0ccb27c123535dfbhttps://blockchain.info/tx/35fd5e8905b145e912a99e06682f228f80a991e011780ccb422f88c21557c60bThe following transactions identified by grazcoin should also be refunded, even though most of them are advertising spam. This prevents any future comments that rules regarding the purchasing of MasterCoins were bent or broken, or the specification wasn't followed by it's creator from the start, etc.
However, I believe that the purchasers made MasterCoin purchases in good faith. A possible solution for these transactions would be for dacoinminster to offer the owners of these particular addresses the option to purchase the equivalent number of Mastercoins (with no bonus, or penalty) at a rate of 1BTC per 100 Mastercoins. This would of course mean he would need to agree to sell them from his personal holdings. (4276.9 Mastercoins = 42.769BTC)
This means that the following tx are
*NOT* mastercoin purchases (although they have "Received Time" before 1.9.2013):
Finally, I agree that the spammy advertising payments that were made should just be treated as normal purchases, provided they fell into the valid purchase window.