But I think the point is that it's not going to stay avaiable on the web for anymore than a day. The examples provided are of those that were intended to be permenant fixutres of the site they were on. In this case, it only sticks around for a short while, and then goes away. I don't see the problem even if it does reek of the same copyright issues.
And even if it does happen to be a problem, it's WPM's idea, and WPM's responsibility.