Screen kept getting randomly centered on visits(like i scroll down and it forces me back to the center, same for up), figure my keyboard might be off, spamming the spacebar or something. Eventually noticed it was a video ad for Arby's that's always there when it happens. It's on the right upper side usually.
|･ω･`)ﾉ" Try reporting the ad here: http://forum.novelupdates.com/threads/reporting-advertisements.32118/