You can look at the blockchain how much money people lost, and for how long the scam went on. Or you can just read Twitter's announcement: they did nothing to mitigate the scam. I remember being scammed for about $200 when I was a teenager and it was awful. I was ashamed of myself.
You're right, but it's also normal for people to be ashamed of getting scammed and not come forward. I have a friend who got scammed by altcoiners and lost most of his BTC even though I warned him many times. He didn't tell me this for many years because he was ashamed. At this time he doesn't have any chance of buying so many Bitcoins again ever in his life.
Leaving those messages up for so much time (at least an hour) was unacceptable anyways. When I was holding a pager for a product that impacted millions of people, my job was to mitigate all problems that could affect them as soon as I could.
> You're right, but it's also normal for people to be ashamed of getting scammed and not come forward
It's true-- but ... no one?
> Leaving those messages up for so much time (at least an hour) was unacceptable anyways.
They were actually still up many hours later and hidden for browsers only by javascript. Pretty remarkable when you consider that almost all of them had a bitcoin address or similar in them and could have been safely substring matched.