I'm not trying to justify piracy here; it's a valid question. In this day and age a growing number of companies are tacitly allowing this kind of copying.
In fact, I've been in a situation like this. One developer copied a video I shot of his app. I had it on Youtube, and he moved it to his Vimeo account. I happen to have found the video on Vimeo before they asked me for permission. If they'd asked, I'd have sent them an original copy on CD.
I don't care that they copied the video (that's why I announced a CC licence on my photos last week), and I know that I'm not alone in this. For all we know Activision doesn't want to bother removing the site. They may even have decided to leave it up until they released the Kindle app.
I've contacted Activision on this, and I'm waiting to see what they do. If they're fine with the site, then so am I.