Adblock Plus

I registered with Adblock plus to block ads on Tumblr. Now in place of the ads they have installed even worse things, comics and other stupid things. On all of these, there is a box with "anonymous" in the box, in the right hand upper corner and an X above it with a witty saying when you click the X, like "you don't like this?" Can Adblock remove these boxes?

Where did you see such box ?
I visited for example and I get no such box