Please, please don't keep it. The random-word advertisements are not only distracting but also invasive to the reading experience--they don't just link, they provide active pop-ups. I'm a moderator of a collaborative writing community with dozens of active readers, and I'm very, very concerned about the impact on our readers with these ads invading the text itself and badly undermining the reading experience.
I understand that Insanejournal needs advertising revenue to support itself, but please confine the ads to the spaces before and after comments. Don't invade our content.