I didn't even VIEW the post again after it was specified until yesterday!
Imagine singing up with Mt. Gox, making a transaction under the premise that your commission rate is .56%. Then, you go to bed. 2 weeks later, you go back on your account and you find, low and behold the commission rate for that transaction 2 weeks ago is 10%. You become (naturally) pissed, because the rules of the game changed and you were not made aware of it.
And I sent Goat 10 btc because he mentioned orphans (which I sent before you posted your butthurt thread, FWIW - I wasn't trying to spite you).
Whether it is a free contest or not is irrelevant.
The statistical nature of the game was slanted against me due to your "rule."
It was free but unfair.
Promises are "free" too...they don't cost a thing, but breaking them is dishonest. Yes I do expect you to PM everyone to notify them of the rule change. PhinneusGage apparently had no problem when I raised a legitimate concern that I may forget about the thread, and thus I should be notified personally when my donations are expected. He seemed to think this was doable. I think it's more stupid that GMT or UTC should be the deciding factor when individual time zones make more sense. Apparently, people in this very thread seem to be at odds over which time zone would be most appropriate anyway...some say GMT, some say UTC, and others agree with me. Given that anyone that makes the same guess (e.g. Dec. 20th) as someone else has their guess immediately nullified due to the "first guesser" rule, the implementation of your GMT rule MADE IT IMPOSSIBLE FOR ME TO WIN.
What if, after your GMT rule, I wanted to change my guess to Dec. 20th? Well, I wouldn't be able to do that if Goat had already guessed it. So, your rule made it IMPOSSIBLE for me to win.