I don't like this AT ALL. It's entirely annoying to have ads popping up in the middle of commenting. On the profile pages is one thing, though still bothersome, but as you're going through the journal pages too? Unacceptable.
Like another user mentioned, it's dangerous and inconvenient. I don't mind the little ads, and the fact that there are more of them now is fine, but full page ads on EVERY NAVIGATION PAGE is crazy.