I was one of the people spoiled in that thread. But, as I posted in that thread, I entered at my own risk knowingly as it had *SPOILERS* in the title when I entered.
Maybe the best way to handle things in the future is to not have spoilers as part of the thread title for any book discussed that's less then six months. So new books won't have spoilers out in the open until at least after the time is up. And the start time would be from the date of the eBook since that does have a fixed date that we can keep track of.