Why did they use TalkImg (and also BitList)? Does someone who is part of this organization know and use Bitcointalk? Or did they simply find these image hosting services and want to take advantage of them? These are questions I no longer know the answers to.
They probably used, or tried using, other image hosting providers as well, but we could speculate they used our two community services especially because they got paid in crypto, so they knew about them.